2656004651 has 4 divisors (see below), whose sum is σ = 2666103792. Its totient is φ = 2645905512.

The previous prime is 2656004621. The next prime is 2656004669. The reversal of 2656004651 is 1564006562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2656004651 - 2¹⁰ = 2656003627 is a prime.

It is a super-2 number, since 2×2656004651² = 14108721412267263602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656004621) 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, 5049176 + ... + 5049701.

It is an arithmetic number, because the mean of its divisors is an integer number (666525948).

Almost surely, 2^2656004651 is an apocalyptic number.

2656004651 is a deficient number, since it is larger than the sum of its proper divisors (10099141).

2656004651 is a wasteful number, since it uses less digits than its factorization.

2656004651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099140.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2656004651 is about 51536.4400303319. The cubic root of 2656004651 is about 1384.8719228878.

The spelling of 2656004651 in words is "two billion, six hundred fifty-six million, four thousand, six hundred fifty-one".