1979207494656 has 176 divisors, whose sum is σ = 6118913623296. Its totient is φ = 557047332864.

The previous prime is 1979207494631. The next prime is 1979207494681. The reversal of 1979207494656 is 6564947029791.

It is an interprime number because it is at equal distance from previous prime (1979207494631) and next prime (1979207494681).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753910 + ... + 2127626.

Almost surely, 2^{1979207494656} is an apocalyptic number.

1979207494656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979207494656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3059456811648).

1979207494656 is an abundant number, since it is smaller than the sum of its proper divisors (4139706128640).

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

1979207494656 is a wasteful number, since it uses less digits than its factorization.

1979207494656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373814 (or 1373796 counting only the distinct ones).

The product of its (nonzero) digits is 205752960, while the sum is 69.

The spelling of 1979207494656 in words is "one trillion, nine hundred seventy-nine billion, two hundred seven million, four hundred ninety-four thousand, six hundred fifty-six".