72215020345 has 16 divisors (see below), whose sum is σ = 93429790272. Its totient is φ = 53267578560.

The previous prime is 72215020327. The next prime is 72215020363. The reversal of 72215020345 is 54302051227.

It is an interprime number because it is at equal distance from previous prime (72215020327) and next prime (72215020363).

It is not a de Polignac number, because 72215020345 - 2⁵ = 72215020313 is a prime.

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, 571711 + ... + 686500.

It is an arithmetic number, because the mean of its divisors is an integer number (5839361892).

Almost surely, 2^72215020345 is an apocalyptic number.

It is an amenable number.

72215020345 is a deficient number, since it is larger than the sum of its proper divisors (21214769927).

72215020345 is a wasteful number, since it uses less digits than its factorization.

72215020345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259112.

The product of its (nonzero) digits is 16800, while the sum is 31.

The spelling of 72215020345 in words is "seventy-two billion, two hundred fifteen million, twenty thousand, three hundred forty-five".