16546645715640 has 64 divisors (see below), whose sum is σ = 52559933456160. Its totient is φ = 4152883630080.

The previous prime is 16546645715617. The next prime is 16546645715671. The reversal of 16546645715640 is 4651754664561.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4055548381 + ... + 4055552460.

Almost surely, 2^{16546645715640} is an apocalyptic number.

16546645715640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16546645715640 is an abundant number, since it is smaller than the sum of its proper divisors (36013287740520).

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

16546645715640 is a wasteful number, since it uses less digits than its factorization.

16546645715640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111100872 (or 8111100868 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 60.

The spelling of 16546645715640 in words is "sixteen trillion, five hundred forty-six billion, six hundred forty-five million, seven hundred fifteen thousand, six hundred forty".