87455991000 has 256 divisors, whose sum is σ = 321904926720. Its totient is φ = 19344960000.

The previous prime is 87455990977. The next prime is 87455991017. The reversal of 87455991000 is 19955478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 583830 + ... + 718170.

It is an arithmetic number, because the mean of its divisors is an integer number (1257441120).

Almost surely, 2^87455991000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87455991000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160952463360).

87455991000 is an abundant number, since it is smaller than the sum of its proper divisors (234448935720).

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

87455991000 is a wasteful number, since it uses less digits than its factorization.

87455991000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134403 (or 134389 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 48.

The spelling of 87455991000 in words is "eighty-seven billion, four hundred fifty-five million, nine hundred ninety-one thousand".