72157151420 has 24 divisors (see below), whose sum is σ = 151542924624. Its totient is φ = 28860402176.

The previous prime is 72157151401. The next prime is 72157151461. The reversal of 72157151420 is 2415175127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97004 + ... + 392076.

It is an arithmetic number, because the mean of its divisors is an integer number (6314288526).

Almost surely, 2^72157151420 is an apocalyptic number.

It is an amenable number.

72157151420 is an abundant number, since it is smaller than the sum of its proper divisors (79385773204).

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

72157151420 is a wasteful number, since it uses less digits than its factorization.

72157151420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307309 (or 307307 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The spelling of 72157151420 in words is "seventy-two billion, one hundred fifty-seven million, one hundred fifty-one thousand, four hundred twenty".