16615055499 has 32 divisors (see below), whose sum is σ = 25840488960. Its totient is φ = 9299750400.

The previous prime is 16615055497. The next prime is 16615055507. The reversal of 16615055499 is 99455051661.

It is not a de Polignac number, because 16615055499 - 2¹ = 16615055497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16615055497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281812 + ... + 335630.

It is an arithmetic number, because the mean of its divisors is an integer number (807515280).

Almost surely, 2^16615055499 is an apocalyptic number.

16615055499 is a deficient number, since it is larger than the sum of its proper divisors (9225433461).

16615055499 is a wasteful number, since it uses less digits than its factorization.

16615055499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54131.

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 16615055499 in words is "sixteen billion, six hundred fifteen million, fifty-five thousand, four hundred ninety-nine".