87553887840 has 144 divisors (see below), whose sum is σ = 314502879600. Its totient is φ = 22118870016.

The previous prime is 87553887833. The next prime is 87553887851. The reversal of 87553887840 is 4878835578.

87553887840 is a `hidden beast` number, since 8 + 7 + 553 + 8 + 8 + 78 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1572675 + ... + 1627394.

It is an arithmetic number, because the mean of its divisors is an integer number (2184047775).

Almost surely, 2^87553887840 is an apocalyptic number.

87553887840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87553887840 is an abundant number, since it is smaller than the sum of its proper divisors (226948991760).

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

87553887840 is a wasteful number, since it uses less digits than its factorization.

87553887840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200109 (or 3200098 counting only the distinct ones).

The product of its (nonzero) digits is 60211200, while the sum is 63.

The spelling of 87553887840 in words is "eighty-seven billion, five hundred fifty-three million, eight hundred eighty-seven thousand, eight hundred forty".