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53990316751 = 723121146559
BaseRepresentation
bin110010010010000100…
…101101101011001111
312011100200022021011011
4302102010231223033
51341033010114001
640445223510051
73620634056200
oct622204555317
9164320267134
1053990316751
1120996143098
12a5692b8327
135125680ab7
1428826835a7
15160ed55d51
hexc9212dacf

53990316751 has 18 divisors (see below), whose sum is σ = 64896442560. Its totient is φ = 44784555480.

The previous prime is 53990316727. The next prime is 53990316767. The reversal of 53990316751 is 15761309935.

53990316751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53990316751 - 25 = 53990316719 is a prime.

It is a super-2 number, since 2×539903167512 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53990316695 and 53990316704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53990116751) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 526191 + ... + 620368.

It is an arithmetic number, because the mean of its divisors is an integer number (3605357920).

Almost surely, 253990316751 is an apocalyptic number.

53990316751 is a deficient number, since it is larger than the sum of its proper divisors (10906125809).

53990316751 is a wasteful number, since it uses less digits than its factorization.

53990316751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146635 (or 1146597 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 49.

The spelling of 53990316751 in words is "fifty-three billion, nine hundred ninety million, three hundred sixteen thousand, seven hundred fifty-one".

Divisors: 1 7 31 49 217 961 1519 6727 47089 1146559 8025913 35543329 56181391 248803303 1101843199 1741623121 7712902393 53990316751