16525099008 has 340 divisors, whose sum is σ = 54049486128. Its totient is φ = 4989911040.

The previous prime is 16525098977. The next prime is 16525099027. The reversal of 16525099008 is 80099052561.

16525099008 is a `hidden beast` number, since 1 + 6 + 52 + 509 + 90 + 0 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58392435 + ... + 58392717.

Almost surely, 2^16525099008 is an apocalyptic number.

16525099008 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 16525099008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27024743064).

16525099008 is an abundant number, since it is smaller than the sum of its proper divisors (37524387120).

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

16525099008 is an frugal number, since it uses more digits than its factorization.

16525099008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 16525099008 in words is "sixteen billion, five hundred twenty-five million, ninety-nine thousand, eight".