16685520124 has 48 divisors (see below), whose sum is σ = 35950125568. Its totient is φ = 6598646208.

The previous prime is 16685520109. The next prime is 16685520139. The reversal of 16685520124 is 42102558661.

It is an interprime number because it is at equal distance from previous prime (16685520109) and next prime (16685520139).

It is a congruent number.

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, 1460137 + ... + 1471519.

Almost surely, 2^16685520124 is an apocalyptic number.

16685520124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16685520124 is an abundant number, since it is smaller than the sum of its proper divisors (19264605444).

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

16685520124 is a wasteful number, since it uses less digits than its factorization.

16685520124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15434 (or 15432 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 16685520124 in words is "sixteen billion, six hundred eighty-five million, five hundred twenty thousand, one hundred twenty-four".