87808994738 has 8 divisors (see below), whose sum is σ = 135273316332. Its totient is φ = 42717889296.

The previous prime is 87808994731. The next prime is 87808994743. The reversal of 87808994738 is 83749980878.

It can be written as a sum of positive squares in 2 ways, for example, as 87359851489 + 449143249 = 295567^2 + 21193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×87808994738² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87808994731) 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, 593303945 + ... + 593304092.

Almost surely, 2^87808994738 is an apocalyptic number.

87808994738 is a deficient number, since it is larger than the sum of its proper divisors (47464321594).

87808994738 is a wasteful number, since it uses less digits than its factorization.

87808994738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186608076.

The product of its (nonzero) digits is 195084288, while the sum is 71.

The spelling of 87808994738 in words is "eighty-seven billion, eight hundred eight million, nine hundred ninety-four thousand, seven hundred thirty-eight".