11877858257 has 4 divisors (see below), whose sum is σ = 11995460916. Its totient is φ = 11760255600.

The previous prime is 11877858253. The next prime is 11877858269. The reversal of 11877858257 is 75285877811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9531812161 + 2346046096 = 97631^2 + 48436^2 .

It is a cyclic number.

It is not a de Polignac number, because 11877858257 - 2² = 11877858253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11877858196 and 11877858205.

It is not an unprimeable number, because it can be changed into a prime (11877858253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58801178 + ... + 58801379.

It is an arithmetic number, because the mean of its divisors is an integer number (2998865229).

Almost surely, 2^11877858257 is an apocalyptic number.

It is an amenable number.

11877858257 is a deficient number, since it is larger than the sum of its proper divisors (117602659).

11877858257 is a wasteful number, since it uses less digits than its factorization.

11877858257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117602658.

The product of its digits is 8780800, while the sum is 59.

The spelling of 11877858257 in words is "eleven billion, eight hundred seventy-seven million, eight hundred fifty-eight thousand, two hundred fifty-seven".