57956257658947 has 2 divisors, whose sum is σ = 57956257658948. Its totient is φ = 57956257658946.

The previous prime is 57956257658833. The next prime is 57956257659059. The reversal of 57956257658947 is 74985675265975.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57956257658947 is a prime.

It is not a weakly prime, because it can be changed into another prime (57956257658447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28978128829473 + 28978128829474.

It is an arithmetic number, because the mean of its divisors is an integer number (28978128829474).

Almost surely, 2^{57956257658947} is an apocalyptic number.

57956257658947 is a deficient number, since it is larger than the sum of its proper divisors (1).

57956257658947 is an equidigital number, since it uses as much as digits as its factorization.

57956257658947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40007520000, while the sum is 85.

The spelling of 57956257658947 in words is "fifty-seven trillion, nine hundred fifty-six billion, two hundred fifty-seven million, six hundred fifty-eight thousand, nine hundred forty-seven".