87945089554 has 128 divisors (see below), whose sum is σ = 165473280000. Its totient is φ = 34916587776.

The previous prime is 87945089549. The next prime is 87945089579. The reversal of 87945089554 is 45598054978.

It is a happy number.

It is a super-2 number, since 2×87945089554² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 367970967 + ... + 367971205.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760000).

Almost surely, 2^87945089554 is an apocalyptic number.

87945089554 is a deficient number, since it is larger than the sum of its proper divisors (77528190446).

87945089554 is a wasteful number, since it uses less digits than its factorization.

87945089554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 64.

The spelling of 87945089554 in words is "eighty-seven billion, nine hundred forty-five million, eighty-nine thousand, five hundred fifty-four".