102198158661904 has 80 divisors (see below), whose sum is σ = 203750876609280. Its totient is φ = 49628763371520.

The previous prime is 102198158661881. The next prime is 102198158661917. The reversal of 102198158661904 is 409166851891201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249443332 + ... + 249852700.

It is an arithmetic number, because the mean of its divisors is an integer number (2546885957616).

Almost surely, 2^{102198158661904} is an apocalyptic number.

It is an amenable number.

102198158661904 is a deficient number, since it is larger than the sum of its proper divisors (101552717947376).

102198158661904 is a wasteful number, since it uses less digits than its factorization.

102198158661904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411128 (or 411122 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 61.

The spelling of 102198158661904 in words is "one hundred two trillion, one hundred ninety-eight billion, one hundred fifty-eight million, six hundred sixty-one thousand, nine hundred four".