16506426654 has 24 divisors (see below), whose sum is σ = 36997164360. Its totient is φ = 5312413008.

The previous prime is 16506426619. The next prime is 16506426679. The reversal of 16506426654 is 45662460561.

16506426654 is a `hidden beast` number, since 165 + 0 + 6 + 426 + 65 + 4 = 666.

It is a Curzon number.

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, 15810232 + ... + 15811275.

It is an arithmetic number, because the mean of its divisors is an integer number (1541548515).

Almost surely, 2^16506426654 is an apocalyptic number.

16506426654 is an abundant number, since it is smaller than the sum of its proper divisors (20490737706).

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

16506426654 is a wasteful number, since it uses less digits than its factorization.

16506426654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31621544 (or 31621541 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 16506426654 in words is "sixteen billion, five hundred six million, four hundred twenty-six thousand, six hundred fifty-four".