72011432570 has 32 divisors (see below), whose sum is σ = 161604878976. Its totient is φ = 22445121600.

The previous prime is 72011432551. The next prime is 72011432611. The reversal of 72011432570 is 7523411027.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46759901 + ... + 46761440.

It is an arithmetic number, because the mean of its divisors is an integer number (5050152468).

Almost surely, 2^72011432570 is an apocalyptic number.

72011432570 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72011432570 is an abundant number, since it is smaller than the sum of its proper divisors (89593446406).

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

72011432570 is a wasteful number, since it uses less digits than its factorization.

72011432570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93521366.

The product of its (nonzero) digits is 11760, while the sum is 32.

Adding to 72011432570 its reverse (7523411027), we get a palindrome (79534843597).

The spelling of 72011432570 in words is "seventy-two billion, eleven million, four hundred thirty-two thousand, five hundred seventy".