2011117165640 has 64 divisors (see below), whose sum is σ = 4953821837760. Its totient is φ = 728731134720.

The previous prime is 2011117165619. The next prime is 2011117165657. The reversal of 2011117165640 is 465617111102.

It is a self number, because there is not a number n which added to its sum of digits gives 2011117165640.

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, 7950959 + ... + 8199998.

It is an arithmetic number, because the mean of its divisors is an integer number (77403466215).

Almost surely, 2^{2011117165640} is an apocalyptic number.

2011117165640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011117165640 is an abundant number, since it is smaller than the sum of its proper divisors (2942704672120).

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

2011117165640 is a wasteful number, since it uses less digits than its factorization.

2011117165640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16151262 (or 16151258 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 2011117165640 in words is "two trillion, eleven billion, one hundred seventeen million, one hundred sixty-five thousand, six hundred forty".