16340646654 has 48 divisors (see below), whose sum is σ = 38135844864. Its totient is φ = 5041990800.

The previous prime is 16340646649. The next prime is 16340646661. The reversal of 16340646654 is 45664604361.

16340646654 is a `hidden beast` number, since 1 + 634 + 0 + 6 + 4 + 6 + 6 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 623782 + ... + 649449.

It is an arithmetic number, because the mean of its divisors is an integer number (794496768).

Almost surely, 2^16340646654 is an apocalyptic number.

16340646654 is an abundant number, since it is smaller than the sum of its proper divisors (21795198210).

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

16340646654 is a wasteful number, since it uses less digits than its factorization.

16340646654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273293 (or 1273290 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 16340646654 in words is "sixteen billion, three hundred forty million, six hundred forty-six thousand, six hundred fifty-four".