1979996629356 has 72 divisors (see below), whose sum is σ = 5349980379744. Its totient is φ = 615905621760.

The previous prime is 1979996629307. The next prime is 1979996629381. The reversal of 1979996629356 is 6539266999791.

1979996629356 is a `hidden beast` number, since 1 + 97 + 99 + 96 + 6 + 2 + 9 + 356 = 666.

It is a super-2 number, since 2×1979996629356² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29128251 + ... + 29196146.

It is an arithmetic number, because the mean of its divisors is an integer number (74305283052).

Almost surely, 2^{1979996629356} is an apocalyptic number.

It is an amenable number.

1979996629356 is an abundant number, since it is smaller than the sum of its proper divisors (3369983750388).

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

1979996629356 is a wasteful number, since it uses less digits than its factorization.

1979996629356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58324471 (or 58324466 counting only the distinct ones).

The product of its digits is 2678462640, while the sum is 81.

The spelling of 1979996629356 in words is "one trillion, nine hundred seventy-nine billion, nine hundred ninety-six million, six hundred twenty-nine thousand, three hundred fifty-six".