16660400512604 has 12 divisors (see below), whose sum is σ = 29159569292784. Its totient is φ = 8329095000384.

The previous prime is 16660400512589. The next prime is 16660400512627. The reversal of 16660400512604 is 40621500406661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276280064 + ... + 276340359.

It is an arithmetic number, because the mean of its divisors is an integer number (2429964107732).

Almost surely, 2^{16660400512604} is an apocalyptic number.

It is an amenable number.

16660400512604 is a deficient number, since it is larger than the sum of its proper divisors (12499168780180).

16660400512604 is a wasteful number, since it uses less digits than its factorization.

16660400512604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552627964 (or 552627962 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 16660400512604 in words is "sixteen trillion, six hundred sixty billion, four hundred million, five hundred twelve thousand, six hundred four".