11911631838258 has 32 divisors (see below), whose sum is σ = 24965749051776. Its totient is φ = 3781611540608.

The previous prime is 11911631838247. The next prime is 11911631838283. The reversal of 11911631838258 is 85283813611911.

It is a junction number, because it is equal to n+sod(n) for n = 11911631838198 and 11911631838207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185195685 + ... + 185259992.

It is an arithmetic number, because the mean of its divisors is an integer number (780179657868).

Almost surely, 2^{11911631838258} is an apocalyptic number.

11911631838258 is an abundant number, since it is smaller than the sum of its proper divisors (13054117213518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11911631838258 is a wasteful number, since it uses less digits than its factorization.

11911631838258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370455938.

The product of its digits is 2488320, while the sum is 57.

The spelling of 11911631838258 in words is "eleven trillion, nine hundred eleven billion, six hundred thirty-one million, eight hundred thirty-eight thousand, two hundred fifty-eight".