1621079118912 has 56 divisors (see below), whose sum is σ = 4679023826592. Its totient is φ = 491236096000.

The previous prime is 1621079118877. The next prime is 1621079118941. The reversal of 1621079118912 is 2198119701261.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 383776089 + ... + 383780312.

Almost surely, 2^{1621079118912} is an apocalyptic number.

1621079118912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1621079118912 is an abundant number, since it is smaller than the sum of its proper divisors (3057944707680).

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

1621079118912 is a wasteful number, since it uses less digits than its factorization.

1621079118912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767556427 (or 767556417 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 48.

The spelling of 1621079118912 in words is "one trillion, six hundred twenty-one billion, seventy-nine million, one hundred eighteen thousand, nine hundred twelve".