87980233140 has 36 divisors (see below), whose sum is σ = 266873374404. Its totient is φ = 23461395456.

The previous prime is 87980233079. The next prime is 87980233157. The reversal of 87980233140 is 4133208978.

It can be written as a sum of positive squares in 2 ways, for example, as 9757093284 + 78223139856 = 98778^2 + 279684^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244389357 + ... + 244389716.

It is an arithmetic number, because the mean of its divisors is an integer number (7413149289).

Almost surely, 2^87980233140 is an apocalyptic number.

It is an amenable number.

87980233140 is an abundant number, since it is smaller than the sum of its proper divisors (178893141264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87980233140 is a wasteful number, since it uses less digits than its factorization.

87980233140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488779088 (or 488779083 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 87980233140 in words is "eighty-seven billion, nine hundred eighty million, two hundred thirty-three thousand, one hundred forty".