201607156660 has 96 divisors (see below), whose sum is σ = 521313311232. Its totient is φ = 63776401920.

The previous prime is 201607156657. The next prime is 201607156693. The reversal of 201607156660 is 66651706102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4182054 + ... + 4229986.

It is an arithmetic number, because the mean of its divisors is an integer number (5430346992).

Almost surely, 2^201607156660 is an apocalyptic number.

201607156660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201607156660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260656655616).

201607156660 is an abundant number, since it is smaller than the sum of its proper divisors (319706154572).

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

201607156660 is a wasteful number, since it uses less digits than its factorization.

201607156660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50273 (or 50271 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 201607156660 in words is "two hundred one billion, six hundred seven million, one hundred fifty-six thousand, six hundred sixty".