11801264775 has 24 divisors (see below), whose sum is σ = 19519097424. Its totient is φ = 6291532800.

The previous prime is 11801264771. The next prime is 11801264789. The reversal of 11801264775 is 57746210811.

11801264775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11801264775 - 2² = 11801264771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801264771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169665 + ... + 228885.

It is an arithmetic number, because the mean of its divisors is an integer number (813295726).

Almost surely, 2^11801264775 is an apocalyptic number.

11801264775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11801264775 is a deficient number, since it is larger than the sum of its proper divisors (7717832649).

11801264775 is a wasteful number, since it uses less digits than its factorization.

11801264775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61891 (or 61886 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 11801264775 in words is "eleven billion, eight hundred one million, two hundred sixty-four thousand, seven hundred seventy-five".