981792977472 has 84 divisors (see below), whose sum is σ = 2814591410176. Its totient is φ = 327210935040.

The previous prime is 981792977471. The next prime is 981792977491. The reversal of 981792977472 is 274779297189.

981792977472 is a `hidden beast` number, since 9 + 81 + 7 + 9 + 2 + 9 + 77 + 472 = 666.

981792977472 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×981792977472² (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 a self number, because there is not a number n which added to its sum of digits gives 981792977472.

It is not an unprimeable number, because it can be changed into a prime (981792977471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3476193 + ... + 3747999.

Almost surely, 2^981792977472 is an apocalyptic number.

It is an amenable number.

981792977472 is an abundant number, since it is smaller than the sum of its proper divisors (1832798432704).

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

981792977472 is a wasteful number, since it uses less digits than its factorization.

981792977472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278096 (or 278083 counting only the distinct ones).

The product of its digits is 224042112, while the sum is 72.

The spelling of 981792977472 in words is "nine hundred eighty-one billion, seven hundred ninety-two million, nine hundred seventy-seven thousand, four hundred seventy-two".