2656650642 has 16 divisors (see below), whose sum is σ = 5592948960. Its totient is φ = 838942272.

The previous prime is 2656650641. The next prime is 2656650683. The reversal of 2656650642 is 2460566562.

It is a junction number, because it is equal to n+sod(n) for n = 2656650594 and 2656650603.

It is not an unprimeable number, because it can be changed into a prime (2656650641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11651863 + ... + 11652090.

It is an arithmetic number, because the mean of its divisors is an integer number (349559310).

Almost surely, 2^2656650642 is an apocalyptic number.

2656650642 is an abundant number, since it is smaller than the sum of its proper divisors (2936298318).

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

2656650642 is a wasteful number, since it uses less digits than its factorization.

2656650642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23303977.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 2656650642 is about 51542.7069719859. The cubic root of 2656650642 is about 1384.9841895435.

The spelling of 2656650642 in words is "two billion, six hundred fifty-six million, six hundred fifty thousand, six hundred forty-two".