72546141065 has 4 divisors (see below), whose sum is σ = 87055369284. Its totient is φ = 58036912848.

The previous prime is 72546141047. The next prime is 72546141091. The reversal of 72546141065 is 56014164527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56014164527 = 43 ⋅1302654989.

It can be written as a sum of positive squares in 2 ways, for example, as 25252070281 + 47294070784 = 158909^2 + 217472^2 .

It is a cyclic number.

It is not a de Polignac number, because 72546141065 - 2²² = 72541946761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7254614102 + ... + 7254614111.

It is an arithmetic number, because the mean of its divisors is an integer number (21763842321).

Almost surely, 2^72546141065 is an apocalyptic number.

It is an amenable number.

72546141065 is a deficient number, since it is larger than the sum of its proper divisors (14509228219).

72546141065 is a wasteful number, since it uses less digits than its factorization.

72546141065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14509228218.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 72546141065 in words is "seventy-two billion, five hundred forty-six million, one hundred forty-one thousand, sixty-five".