11557710977 has 2 divisors, whose sum is σ = 11557710978. Its totient is φ = 11557710976.

The previous prime is 11557710973. The next prime is 11557711043. The reversal of 11557710977 is 77901775511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11117382721 + 440328256 = 105439^2 + 20984^2 .

It is a cyclic number.

It is not a de Polignac number, because 11557710977 - 2² = 11557710973 is a prime.

It is not a weakly prime, because it can be changed into another prime (11557710973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778855488 + 5778855489.

It is an arithmetic number, because the mean of its divisors is an integer number (5778855489).

Almost surely, 2^11557710977 is an apocalyptic number.

It is an amenable number.

11557710977 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557710977 is an equidigital number, since it uses as much as digits as its factorization.

11557710977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540225, while the sum is 50.

The spelling of 11557710977 in words is "eleven billion, five hundred fifty-seven million, seven hundred ten thousand, nine hundred seventy-seven".