87831477044 has 12 divisors (see below), whose sum is σ = 153719674500. Its totient is φ = 43911570048.

The previous prime is 87831477037. The next prime is 87831477073. The reversal of 87831477044 is 44077413878.

It can be written as a sum of positive squares in 2 ways, for example, as 59530144144 + 28301332900 = 243988^2 + 168230^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994469 + ... + 1079180.

It is an arithmetic number, because the mean of its divisors is an integer number (12809972875).

Almost surely, 2^87831477044 is an apocalyptic number.

It is an amenable number.

87831477044 is a deficient number, since it is larger than the sum of its proper divisors (65888197456).

87831477044 is a wasteful number, since it uses less digits than its factorization.

87831477044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084242 (or 2084240 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 53.

The spelling of 87831477044 in words is "eighty-seven billion, eight hundred thirty-one million, four hundred seventy-seven thousand, forty-four".