72645074307475 has 12 divisors (see below), whose sum is σ = 90081517829040. Its totient is φ = 58115010615200.

The previous prime is 72645074307437. The next prime is 72645074307527. The reversal of 72645074307475 is 57470347054627.

It is not a de Polignac number, because 72645074307475 - 2³⁷ = 72507635354003 is a prime.

It is a super-3 number, since 3×72645074307475³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24806311 + ... + 27579760.

It is an arithmetic number, because the mean of its divisors is an integer number (7506793152420).

Almost surely, 2^{72645074307475} is an apocalyptic number.

72645074307475 is a deficient number, since it is larger than the sum of its proper divisors (17436443521565).

72645074307475 is a wasteful number, since it uses less digits than its factorization.

72645074307475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52441550 (or 52441545 counting only the distinct ones).

The product of its (nonzero) digits is 138297600, while the sum is 61.

The spelling of 72645074307475 in words is "seventy-two trillion, six hundred forty-five billion, seventy-four million, three hundred seven thousand, four hundred seventy-five".