12111479885780 has 24 divisors (see below), whose sum is σ = 27746299375200. Its totient is φ = 4404174503840.

The previous prime is 12111479885773. The next prime is 12111479885819. The reversal of 12111479885780 is 8758897411121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27526090430 + ... + 27526090869.

It is an arithmetic number, because the mean of its divisors is an integer number (1156095807300).

Almost surely, 2^{12111479885780} is an apocalyptic number.

12111479885780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111479885780 is an abundant number, since it is smaller than the sum of its proper divisors (15634819489420).

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

12111479885780 is a wasteful number, since it uses less digits than its factorization.

12111479885780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55052181319 (or 55052181317 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 62.

The spelling of 12111479885780 in words is "twelve trillion, one hundred eleven billion, four hundred seventy-nine million, eight hundred eighty-five thousand, seven hundred eighty".