72172712417304 has 32 divisors (see below), whose sum is σ = 181852503736320. Its totient is φ = 23868141113376.

The previous prime is 72172712417257. The next prime is 72172712417389. The reversal of 72172712417304 is 40371421727127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11839352664 + ... + 11839358759.

It is an arithmetic number, because the mean of its divisors is an integer number (5682890741760).

Almost surely, 2^{72172712417304} is an apocalyptic number.

It is an amenable number.

72172712417304 is an abundant number, since it is smaller than the sum of its proper divisors (109679791319016).

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

72172712417304 is a wasteful number, since it uses less digits than its factorization.

72172712417304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23678711559 (or 23678711555 counting only the distinct ones).

The product of its (nonzero) digits is 921984, while the sum is 48.

The spelling of 72172712417304 in words is "seventy-two trillion, one hundred seventy-two billion, seven hundred twelve million, four hundred seventeen thousand, three hundred four".