201664617004 has 48 divisors (see below), whose sum is σ = 366966351360. Its totient is φ = 96898985280.

The previous prime is 201664616987. The next prime is 201664617043. The reversal of 201664617004 is 400716466102.

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, 9717319 + ... + 9738049.

It is an arithmetic number, because the mean of its divisors is an integer number (7645132320).

Almost surely, 2^201664617004 is an apocalyptic number.

It is an amenable number.

201664617004 is a deficient number, since it is larger than the sum of its proper divisors (165301734356).

201664617004 is a wasteful number, since it uses less digits than its factorization.

201664617004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21718 (or 21716 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 201664617004 in words is "two hundred one billion, six hundred sixty-four million, six hundred seventeen thousand, four".