18699106608 has 560 divisors, whose sum is σ = 68004536320. Its totient is φ = 4847371776.

The previous prime is 18699106607. The next prime is 18699106661. The reversal of 18699106608 is 80660199681.

18699106608 is a `hidden beast` number, since 18 + 6 + 9 + 9 + 10 + 6 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (18699106607) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 83852385 + ... + 83852607.

It is an arithmetic number, because the mean of its divisors is an integer number (121436672).

Almost surely, 2^18699106608 is an apocalyptic number.

18699106608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18699106608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34002268160).

18699106608 is an abundant number, since it is smaller than the sum of its proper divisors (49305429712).

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

18699106608 is a wasteful number, since it uses less digits than its factorization.

18699106608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 18699106608 in words is "eighteen billion, six hundred ninety-nine million, one hundred six thousand, six hundred eight".