72302132123312 has 80 divisors (see below), whose sum is σ = 172427017297920. Its totient is φ = 28600678768896.

The previous prime is 72302132123281. The next prime is 72302132123327. The reversal of 72302132123312 is 21332123120327.

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, 15635489 + ... + 19724927.

It is an arithmetic number, because the mean of its divisors is an integer number (2155337716224).

Almost surely, 2^{72302132123312} is an apocalyptic number.

It is an amenable number.

72302132123312 is an abundant number, since it is smaller than the sum of its proper divisors (100124885174608).

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

72302132123312 is a wasteful number, since it uses less digits than its factorization.

72302132123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101610 (or 4101604 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 72302132123312 its reverse (21332123120327), we get a palindrome (93634255243639).

The spelling of 72302132123312 in words is "seventy-two trillion, three hundred two billion, one hundred thirty-two million, one hundred twenty-three thousand, three hundred twelve".