10691881279615 has 16 divisors (see below), whose sum is σ = 12855243153600. Its totient is φ = 8536855874560.

The previous prime is 10691881279553. The next prime is 10691881279637. The reversal of 10691881279615 is 51697218819601.

It is not a de Polignac number, because 10691881279615 - 2³⁷ = 10554442326143 is a prime.

It is a super-2 number, since 2×10691881279615² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10339425 + ... + 11326405.

It is an arithmetic number, because the mean of its divisors is an integer number (803452697100).

Almost surely, 2^{10691881279615} is an apocalyptic number.

10691881279615 is a deficient number, since it is larger than the sum of its proper divisors (2163361873985).

10691881279615 is an equidigital number, since it uses as much as digits as its factorization.

10691881279615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991202.

The product of its (nonzero) digits is 13063680, while the sum is 64.

The spelling of 10691881279615 in words is "ten trillion, six hundred ninety-one billion, eight hundred eighty-one million, two hundred seventy-nine thousand, six hundred fifteen".