72720470044370 has 64 divisors (see below), whose sum is σ = 138740209603200. Its totient is φ = 27367067566080.

The previous prime is 72720470044357. The next prime is 72720470044399. The reversal of 72720470044370 is 7344007402727.

It is a super-2 number, since 2×72720470044370² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13913096 + ... + 18412364.

It is an arithmetic number, because the mean of its divisors is an integer number (2167815775050).

Almost surely, 2^{72720470044370} is an apocalyptic number.

72720470044370 is a deficient number, since it is larger than the sum of its proper divisors (66019739558830).

72720470044370 is a wasteful number, since it uses less digits than its factorization.

72720470044370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499883.

The product of its (nonzero) digits is 1843968, while the sum is 47.

The spelling of 72720470044370 in words is "seventy-two trillion, seven hundred twenty billion, four hundred seventy million, forty-four thousand, three hundred seventy".