1979735747904 has 168 divisors, whose sum is σ = 5762439072000. Its totient is φ = 649738312704.

The previous prime is 1979735747839. The next prime is 1979735747917. The reversal of 1979735747904 is 4097475379791.

1979735747904 is a `hidden beast` number, since 19 + 7 + 97 + 3 + 57 + 479 + 0 + 4 = 666.

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 16275342 + ... + 16396530.

Almost surely, 2^{1979735747904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979735747904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2881219536000).

1979735747904 is an abundant number, since it is smaller than the sum of its proper divisors (3782703324096).

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

1979735747904 is a wasteful number, since it uses less digits than its factorization.

1979735747904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121645 (or 121632 counting only the distinct ones).

The product of its (nonzero) digits is 420078960, while the sum is 72.

The spelling of 1979735747904 in words is "one trillion, nine hundred seventy-nine billion, seven hundred thirty-five million, seven hundred forty-seven thousand, nine hundred four".