87998369490 has 64 divisors (see below), whose sum is σ = 234968025600. Its totient is φ = 23435661312.

The previous prime is 87998369467. The next prime is 87998369513. The reversal of 87998369490 is 9496389978.

87998369490 is a `hidden beast` number, since 8 + 79 + 9 + 8 + 3 + 69 + 490 = 666.

It is an interprime number because it is at equal distance from previous prime (87998369467) and next prime (87998369513).

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 31 ways as a sum of consecutive naturals, for example, 4282 + ... + 419541.

It is an arithmetic number, because the mean of its divisors is an integer number (3671375400).

Almost surely, 2^87998369490 is an apocalyptic number.

87998369490 is an abundant number, since it is smaller than the sum of its proper divisors (146969656110).

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

87998369490 is a wasteful number, since it uses less digits than its factorization.

87998369490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424608 (or 424602 counting only the distinct ones).

The product of its (nonzero) digits is 211631616, while the sum is 72.

The spelling of 87998369490 in words is "eighty-seven billion, nine hundred ninety-eight million, three hundred sixty-nine thousand, four hundred ninety".