10915745093921 has 4 divisors (see below), whose sum is σ = 10916084746644. Its totient is φ = 10915405441200.

The previous prime is 10915745093867. The next prime is 10915745093971. The reversal of 10915745093921 is 12939054751901.

10915745093921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7541965957696 + 3373779136225 = 2746264^2 + 1836785^2 .

It is a cyclic number.

It is not a de Polignac number, because 10915745093921 - 2⁴² = 6517698582817 is a prime.

It is a super-2 number, since 2×10915745093921² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10915745093971) 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, 169778150 + ... + 169842431.

It is an arithmetic number, because the mean of its divisors is an integer number (2729021186661).

Almost surely, 2^{10915745093921} is an apocalyptic number.

It is an amenable number.

10915745093921 is a deficient number, since it is larger than the sum of its proper divisors (339652723).

10915745093921 is an equidigital number, since it uses as much as digits as its factorization.

10915745093921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339652722.

The product of its (nonzero) digits is 3061800, while the sum is 56.

The spelling of 10915745093921 in words is "ten trillion, nine hundred fifteen billion, seven hundred forty-five million, ninety-three thousand, nine hundred twenty-one".