16445199654 has 24 divisors (see below), whose sum is σ = 38372133072. Its totient is φ = 5060061360.

The previous prime is 16445199649. The next prime is 16445199689. The reversal of 16445199654 is 45699154461.

16445199654 is a `hidden beast` number, since 1 + 6 + 445 + 199 + 6 + 5 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16445199654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35139082 + ... + 35139549.

It is an arithmetic number, because the mean of its divisors is an integer number (1598838878).

Almost surely, 2^16445199654 is an apocalyptic number.

16445199654 is an abundant number, since it is smaller than the sum of its proper divisors (21926933418).

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

16445199654 is a wasteful number, since it uses less digits than its factorization.

16445199654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70278652 (or 70278649 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 16445199654 in words is "sixteen billion, four hundred forty-five million, one hundred ninety-nine thousand, six hundred fifty-four".