57611538947 has 2 divisors, whose sum is σ = 57611538948. Its totient is φ = 57611538946.

The previous prime is 57611538931. The next prime is 57611538991. The reversal of 57611538947 is 74983511675.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57611538947 - 2⁴ = 57611538931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57611538892 and 57611538901.

It is not a weakly prime, because it can be changed into another prime (57611534947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28805769473 + 28805769474.

It is an arithmetic number, because the mean of its divisors is an integer number (28805769474).

Almost surely, 2^57611538947 is an apocalyptic number.

57611538947 is a deficient number, since it is larger than the sum of its proper divisors (1).

57611538947 is an equidigital number, since it uses as much as digits as its factorization.

57611538947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 56.

The spelling of 57611538947 in words is "fifty-seven billion, six hundred eleven million, five hundred thirty-eight thousand, nine hundred forty-seven".