72674489520 has 200 divisors, whose sum is σ = 261113711760. Its totient is φ = 18711544320.

The previous prime is 72674489509. The next prime is 72674489533. The reversal of 72674489520 is 2598447627.

72674489520 is a `hidden beast` number, since 7 + 2 + 6 + 74 + 48 + 9 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 39 ways as a sum of consecutive naturals, for example, 5446 + ... + 381285.

Almost surely, 2^72674489520 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 72674489520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130556855880).

72674489520 is an abundant number, since it is smaller than the sum of its proper divisors (188439222240).

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

72674489520 is a wasteful number, since it uses less digits than its factorization.

72674489520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386785 (or 386770 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 72674489520 in words is "seventy-two billion, six hundred seventy-four million, four hundred eighty-nine thousand, five hundred twenty".