11957266780 has 48 divisors (see below), whose sum is σ = 25391439360. Its totient is φ = 4729472000.

The previous prime is 11957266759. The next prime is 11957266793. The reversal of 11957266780 is 8766275911.

11957266780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1776261 + ... + 1782979.

It is an arithmetic number, because the mean of its divisors is an integer number (528988320).

Almost surely, 2^11957266780 is an apocalyptic number.

11957266780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11957266780 is an abundant number, since it is smaller than the sum of its proper divisors (13434172580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11957266780 is a wasteful number, since it uses less digits than its factorization.

11957266780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710 (or 7708 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 11957266780 in words is "eleven billion, nine hundred fifty-seven million, two hundred sixty-six thousand, seven hundred eighty".