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53751997413 = 331990814719
BaseRepresentation
bin110010000011110111…
…100110001111100101
312010202001212101111000
4302003313212033211
51340041002404123
640405431503513
73612011303502
oct620367461745
9163661771430
1053751997413
1120883668264
12a501527b99
1350b819ac3a
14285cb684a9
1515e8e7cb43
hexc83de63e5

53751997413 has 8 divisors (see below), whose sum is σ = 79632588800. Its totient is φ = 35834664924.

The previous prime is 53751997399. The next prime is 53751997513. The reversal of 53751997413 is 31479915735.

53751997413 is a `hidden beast` number, since 5 + 37 + 5 + 199 + 7 + 413 = 666.

It is not a de Polignac number, because 53751997413 - 218 = 53751735269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53751997413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53751997513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995407333 + ... + 995407386.

It is an arithmetic number, because the mean of its divisors is an integer number (9954073600).

Almost surely, 253751997413 is an apocalyptic number.

It is an amenable number.

53751997413 is a deficient number, since it is larger than the sum of its proper divisors (25880591387).

53751997413 is a wasteful number, since it uses less digits than its factorization.

53751997413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990814728 (or 1990814722 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 54.

The spelling of 53751997413 in words is "fifty-three billion, seven hundred fifty-one million, nine hundred ninety-seven thousand, four hundred thirteen".

Divisors: 1 3 9 27 1990814719 5972444157 17917332471 53751997413