72192557487 has 16 divisors (see below), whose sum is σ = 99484421120. Its totient is φ = 46518364800.

The previous prime is 72192557473. The next prime is 72192557533. The reversal of 72192557487 is 78475529127.

It is a happy number.

It is not a de Polignac number, because 72192557487 - 2¹⁴ = 72192541103 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 (72192557407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403162 + ... + 554007.

It is an arithmetic number, because the mean of its divisors is an integer number (6217776320).

Almost surely, 2^72192557487 is an apocalyptic number.

72192557487 is a deficient number, since it is larger than the sum of its proper divisors (27291863633).

72192557487 is a wasteful number, since it uses less digits than its factorization.

72192557487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958014.

The product of its digits is 9878400, while the sum is 57.

The spelling of 72192557487 in words is "seventy-two billion, one hundred ninety-two million, five hundred fifty-seven thousand, four hundred eighty-seven".