87144436580 has 12 divisors (see below), whose sum is σ = 183003316860. Its totient is φ = 34857774624.

The previous prime is 87144436579. The next prime is 87144436651. The reversal of 87144436580 is 8563444178.

It can be written as a sum of positive squares in 2 ways, for example, as 53032562944 + 34111873636 = 230288^2 + 184694^2 .

It is a super-3 number, since 3×87144436580³ (a number of 34 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 2178610895 + ... + 2178610934.

It is an arithmetic number, because the mean of its divisors is an integer number (15250276405).

Almost surely, 2^87144436580 is an apocalyptic number.

It is an amenable number.

87144436580 is an abundant number, since it is smaller than the sum of its proper divisors (95858880280).

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

87144436580 is a wasteful number, since it uses less digits than its factorization.

87144436580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357221838 (or 4357221836 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 87144436580 in words is "eighty-seven billion, one hundred forty-four million, four hundred thirty-six thousand, five hundred eighty".