72501902345 has 16 divisors (see below), whose sum is σ = 92460019968. Its totient is φ = 54388212480.

The previous prime is 72501902323. The next prime is 72501902351. The reversal of 72501902345 is 54320910527.

It is not a de Polignac number, because 72501902345 - 2⁶ = 72501902281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72501902299 and 72501902308.

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, 1550699 + ... + 1596768.

It is an arithmetic number, because the mean of its divisors is an integer number (5778751248).

Almost surely, 2^72501902345 is an apocalyptic number.

It is an amenable number.

72501902345 is a deficient number, since it is larger than the sum of its proper divisors (19958117623).

72501902345 is a wasteful number, since it uses less digits than its factorization.

72501902345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147760.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 72501902345 in words is "seventy-two billion, five hundred one million, nine hundred two thousand, three hundred forty-five".