8479921406544 has 240 divisors, whose sum is σ = 29470739783680. Its totient is φ = 2221274430720.

The previous prime is 8479921406521. The next prime is 8479921406549. The reversal of 8479921406544 is 4456041299748.

8479921406544 is a `hidden beast` number, since 8 + 4 + 79 + 9 + 2 + 14 + 0 + 6 + 544 = 666.

It is a super-2 number, since 2×8479921406544² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8479921406549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6547732 + ... + 7735155.

Almost surely, 2^{8479921406544} is an apocalyptic number.

8479921406544 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

8479921406544 is an abundant number, since it is smaller than the sum of its proper divisors (20990818377136).

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

8479921406544 is a wasteful number, since it uses less digits than its factorization.

8479921406544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14282958 (or 14282949 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 8479921406544 in words is "eight trillion, four hundred seventy-nine billion, nine hundred twenty-one million, four hundred six thousand, five hundred forty-four".