2656142651 has 8 divisors (see below), whose sum is σ = 2742417408. Its totient is φ = 2569905000.

The previous prime is 2656142633. The next prime is 2656142659. The reversal of 2656142651 is 1562416562.

2656142651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656142651 is a prime.

It is a super-2 number, since 2×2656142651² = 14110187564922615602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656142659) 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, 273326 + ... + 282876.

It is an arithmetic number, because the mean of its divisors is an integer number (342802176).

Almost surely, 2^2656142651 is an apocalyptic number.

2656142651 is a deficient number, since it is larger than the sum of its proper divisors (86274757).

2656142651 is an equidigital number, since it uses as much as digits as its factorization.

2656142651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18553.

The product of its digits is 86400, while the sum is 38.

The square root of 2656142651 is about 51537.7788714260. The cubic root of 2656142651 is about 1384.8959074110.

The spelling of 2656142651 in words is "two billion, six hundred fifty-six million, one hundred forty-two thousand, six hundred fifty-one".