1507779879912 has 64 divisors (see below), whose sum is σ = 4209978480000. Its totient is φ = 499989169152.

The previous prime is 1507779879911. The next prime is 1507779879923. The reversal of 1507779879912 is 2199789777051.

It is a super-2 number, since 2×1507779879912² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (1507779879911) by changing a digit.

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, 18042412 + ... + 18125787.

It is an arithmetic number, because the mean of its divisors is an integer number (65780913750).

Almost surely, 2^{1507779879912} is an apocalyptic number.

1507779879912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1507779879912 is an abundant number, since it is smaller than the sum of its proper divisors (2702198600088).

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

1507779879912 is a wasteful number, since it uses less digits than its factorization.

1507779879912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36168407 (or 36168397 counting only the distinct ones).

The product of its (nonzero) digits is 140026320, while the sum is 72.

The spelling of 1507779879912 in words is "one trillion, five hundred seven billion, seven hundred seventy-nine million, eight hundred seventy-nine thousand, nine hundred twelve".