87593972187 has 4 divisors (see below), whose sum is σ = 116791962920. Its totient is φ = 58395981456.

The previous prime is 87593972153. The next prime is 87593972321. The reversal of 87593972187 is 78127939578.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87593972187 - 2¹⁶ = 87593906651 is a prime.

It is a super-4 number, since 4×87593972187⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87593971187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14598995362 + ... + 14598995367.

It is an arithmetic number, because the mean of its divisors is an integer number (29197990730).

Almost surely, 2^87593972187 is an apocalyptic number.

87593972187 is a deficient number, since it is larger than the sum of its proper divisors (29197990733).

87593972187 is a wasteful number, since it uses less digits than its factorization.

87593972187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29197990732.

The product of its digits is 53343360, while the sum is 66.

The spelling of 87593972187 in words is "eighty-seven billion, five hundred ninety-three million, nine hundred seventy-two thousand, one hundred eighty-seven".