6381979482492 has 72 divisors (see below), whose sum is σ = 16848229411104. Its totient is φ = 2033068916736.

The previous prime is 6381979482479. The next prime is 6381979482499. The reversal of 6381979482492 is 2942849791836.

6381979482492 is a `hidden beast` number, since 6 + 3 + 8 + 1 + 97 + 9 + 48 + 2 + 492 = 666.

It is a super-2 number, since 2×6381979482492² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6381979482492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381979482499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2387773 + ... + 4297140.

Almost surely, 2^{6381979482492} is an apocalyptic number.

It is an amenable number.

6381979482492 is an abundant number, since it is smaller than the sum of its proper divisors (10466249928612).

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

6381979482492 is a wasteful number, since it uses less digits than its factorization.

6381979482492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6686099 (or 6686094 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 72.

Adding to 6381979482492 its sum of digits (72), we get a square (6381979482564 = 2526258²).

The spelling of 6381979482492 in words is "six trillion, three hundred eighty-one billion, nine hundred seventy-nine million, four hundred eighty-two thousand, four hundred ninety-two".