87961622054580 has 144 divisors (see below), whose sum is σ = 275430186630144. Its totient is φ = 22699256762880.

The previous prime is 87961622054513. The next prime is 87961622054617. The reversal of 87961622054580 is 8545022616978.

87961622054580 is a `hidden beast` number, since 8 + 7 + 9 + 6 + 1 + 6 + 2 + 2 + 0 + 545 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285860289 + ... + 286167831.

It is an arithmetic number, because the mean of its divisors is an integer number (1912709629376).

Almost surely, 2^{87961622054580} is an apocalyptic number.

It is an amenable number.

87961622054580 is an abundant number, since it is smaller than the sum of its proper divisors (187468564575564).

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

87961622054580 is a wasteful number, since it uses less digits than its factorization.

87961622054580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358846 (or 358841 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 87961622054580 in words is "eighty-seven trillion, nine hundred sixty-one billion, six hundred twenty-two million, fifty-four thousand, five hundred eighty".