2016501656 has 16 divisors (see below), whose sum is σ = 4071782400. Its totient is φ = 930693024.

The previous prime is 2016501649. The next prime is 2016501659. The reversal of 2016501656 is 6561056102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016501659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9694616 + ... + 9694823.

It is an arithmetic number, because the mean of its divisors is an integer number (254486400).

Almost surely, 2^2016501656 is an apocalyptic number.

2016501656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2016501656 is an abundant number, since it is smaller than the sum of its proper divisors (2055280744).

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

2016501656 is a wasteful number, since it uses less digits than its factorization.

2016501656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19389458 (or 19389454 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 2016501656 is about 44905.4746773709. The cubic root of 2016501656 is about 1263.3766938997.

Adding to 2016501656 its reverse (6561056102), we get a palindrome (8577557758).

The spelling of 2016501656 in words is "two billion, sixteen million, five hundred one thousand, six hundred fifty-six".