11257677161 has 2 divisors, whose sum is σ = 11257677162. Its totient is φ = 11257677160.

The previous prime is 11257677139. The next prime is 11257677181. The reversal of 11257677161 is 16177675211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9545290000 + 1712387161 = 97700^2 + 41381^2 .

It is a cyclic number.

It is not a de Polignac number, because 11257677161 - 2⁶ = 11257677097 is a prime.

It is a super-2 number, since 2×11257677161² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11257677121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628838580 + 5628838581.

It is an arithmetic number, because the mean of its divisors is an integer number (5628838581).

Almost surely, 2^11257677161 is an apocalyptic number.

It is an amenable number.

11257677161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11257677161 is an equidigital number, since it uses as much as digits as its factorization.

11257677161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 44.

The spelling of 11257677161 in words is "eleven billion, two hundred fifty-seven million, six hundred seventy-seven thousand, one hundred sixty-one".