72615097575 has 36 divisors (see below), whose sum is σ = 130076316448. Its totient is φ = 38723702400.

The previous prime is 72615097573. The next prime is 72615097589. The reversal of 72615097575 is 57579051627.

72615097575 is a `hidden beast` number, since 7 + 2 + 61 + 5 + 0 + 9 + 7 + 575 = 666.

It is not a de Polignac number, because 72615097575 - 2¹ = 72615097573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72615097573) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3528315 + ... + 3548835.

Almost surely, 2^72615097575 is an apocalyptic number.

72615097575 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72615097575 is a deficient number, since it is larger than the sum of its proper divisors (57461218873).

72615097575 is a wasteful number, since it uses less digits than its factorization.

72615097575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36264 (or 36256 counting only the distinct ones).

The product of its (nonzero) digits is 4630500, while the sum is 54.

The spelling of 72615097575 in words is "seventy-two billion, six hundred fifteen million, ninety-seven thousand, five hundred seventy-five".