72507387087 has 24 divisors (see below), whose sum is σ = 109303741456. Its totient is φ = 48030345792.

The previous prime is 72507387059. The next prime is 72507387179. The reversal of 72507387087 is 78078370527.

It is a happy number.

72507387087 is a `hidden beast` number, since 7 + 250 + 7 + 387 + 0 + 8 + 7 = 666.

It is not a de Polignac number, because 72507387087 - 2¹² = 72507382991 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 (72507387037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 912118 + ... + 988419.

Almost surely, 2^72507387087 is an apocalyptic number.

72507387087 is a deficient number, since it is larger than the sum of its proper divisors (36796354369).

72507387087 is a wasteful number, since it uses less digits than its factorization.

72507387087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900709 (or 1900697 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 54.

The spelling of 72507387087 in words is "seventy-two billion, five hundred seven million, three hundred eighty-seven thousand, eighty-seven".