72009188476974 has 24 divisors (see below), whose sum is σ = 178308466705200. Its totient is φ = 20574053850528.

The previous prime is 72009188476943. The next prime is 72009188476993. The reversal of 72009188476974 is 47967488190027.

72009188476974 is a `hidden beast` number, since 7 + 2 + 0 + 0 + 9 + 1 + 88 + 476 + 9 + 74 = 666.

It is a super-2 number, since 2×72009188476974² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285750747799 + ... + 285750748050.

It is an arithmetic number, because the mean of its divisors is an integer number (7429519446050).

Almost surely, 2^{72009188476974} is an apocalyptic number.

72009188476974 is an abundant number, since it is smaller than the sum of its proper divisors (106299278228226).

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

72009188476974 is a wasteful number, since it uses less digits than its factorization.

72009188476974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571501495864 (or 571501495861 counting only the distinct ones).

The product of its (nonzero) digits is 341397504, while the sum is 72.

The spelling of 72009188476974 in words is "seventy-two trillion, nine billion, one hundred eighty-eight million, four hundred seventy-six thousand, nine hundred seventy-four".