11979695920291 has 16 divisors (see below), whose sum is σ = 13202083012608. Its totient is φ = 10779925564800.

The previous prime is 11979695920277. The next prime is 11979695920333. The reversal of 11979695920291 is 19202959697911.

It is a cyclic number.

It is not a de Polignac number, because 11979695920291 - 2⁷ = 11979695920163 is a prime.

It is a super-2 number, since 2×11979695920291² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11979695920291.

It is not an unprimeable number, because it can be changed into a prime (11979695920691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9297295 + ... + 10507096.

It is an arithmetic number, because the mean of its divisors is an integer number (825130188288).

Almost surely, 2^{11979695920291} is an apocalyptic number.

11979695920291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11979695920291 is a deficient number, since it is larger than the sum of its proper divisors (1222387092317).

11979695920291 is a wasteful number, since it uses less digits than its factorization.

11979695920291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19804962.

The product of its (nonzero) digits is 49601160, while the sum is 70.

The spelling of 11979695920291 in words is "eleven trillion, nine hundred seventy-nine billion, six hundred ninety-five million, nine hundred twenty thousand, two hundred ninety-one".