11856062910921 has 32 divisors (see below), whose sum is σ = 17066788680960. Its totient is φ = 7298576888064.

The previous prime is 11856062910871. The next prime is 11856062910929. The reversal of 11856062910921 is 12901926065811.

It is not a de Polignac number, because 11856062910921 - 2¹³ = 11856062902729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11856062910929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12834271 + ... + 13727003.

It is an arithmetic number, because the mean of its divisors is an integer number (533337146280).

Almost surely, 2^{11856062910921} is an apocalyptic number.

It is an amenable number.

11856062910921 is a deficient number, since it is larger than the sum of its proper divisors (5210725770039).

11856062910921 is a wasteful number, since it uses less digits than its factorization.

11856062910921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899425.

The product of its (nonzero) digits is 466560, while the sum is 51.

The spelling of 11856062910921 in words is "eleven trillion, eight hundred fifty-six billion, sixty-two million, nine hundred ten thousand, nine hundred twenty-one".