16100661699 has 48 divisors (see below), whose sum is σ = 26066383200. Its totient is φ = 9527067648.

The previous prime is 16100661683. The next prime is 16100661701. The reversal of 16100661699 is 99616600161.

16100661699 is a `hidden beast` number, since 16 + 10 + 0 + 6 + 616 + 9 + 9 = 666.

It is not a de Polignac number, because 16100661699 - 2⁴ = 16100661683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16100661299) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148597 + ... + 232985.

It is an arithmetic number, because the mean of its divisors is an integer number (543049650).

Almost surely, 2^16100661699 is an apocalyptic number.

16100661699 is a deficient number, since it is larger than the sum of its proper divisors (9965721501).

16100661699 is a wasteful number, since it uses less digits than its factorization.

16100661699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84484 (or 84481 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 16100661699 in words is "sixteen billion, one hundred million, six hundred sixty-one thousand, six hundred ninety-nine".