2656631254 has 16 divisors (see below), whose sum is σ = 4073409648. Its totient is φ = 1298992032.

The previous prime is 2656631251. The next prime is 2656631287. The reversal of 2656631254 is 4521366562.

It is a happy number.

It is a super-2 number, since 2×2656631254² = 14115379239459225032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656631251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8277 + ... + 73360.

It is an arithmetic number, because the mean of its divisors is an integer number (254588103).

Almost surely, 2^2656631254 is an apocalyptic number.

2656631254 is a deficient number, since it is larger than the sum of its proper divisors (1416778394).

2656631254 is a wasteful number, since it uses less digits than its factorization.

2656631254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81999.

The product of its digits is 259200, while the sum is 40.

The square root of 2656631254 is about 51542.5188945981. The cubic root of 2656631254 is about 1384.9808203715.

The spelling of 2656631254 in words is "two billion, six hundred fifty-six million, six hundred thirty-one thousand, two hundred fifty-four".