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57788694947 = 474192934479
BaseRepresentation
bin110101110100011110…
…011000000110100011
312112011101121212111002
4311310132120012203
51421322401214242
642314152142215
74114025542124
oct656436300643
9175141555432
1057788694947
1122565236925
12b24939796b
1355ac59ac69
142b22d1204b
151783551432
hexd747981a3

57788694947 has 8 divisors (see below), whose sum is σ = 59159116800. Its totient is φ = 56424142984.

The previous prime is 57788694923. The next prime is 57788694989. The reversal of 57788694947 is 74949688775.

57788694947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57788694947 - 222 = 57784500643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57788694907) 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, 1447547 + ... + 1486932.

It is an arithmetic number, because the mean of its divisors is an integer number (7394889600).

Almost surely, 257788694947 is an apocalyptic number.

57788694947 is a deficient number, since it is larger than the sum of its proper divisors (1370421853).

57788694947 is a wasteful number, since it uses less digits than its factorization.

57788694947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934945.

The product of its digits is 853493760, while the sum is 74.

The spelling of 57788694947 in words is "fifty-seven billion, seven hundred eighty-eight million, six hundred ninety-four thousand, nine hundred forty-seven".

Divisors: 1 47 419 19693 2934479 137920513 1229546701 57788694947