2656651554 has 64 divisors (see below), whose sum is σ = 6241622400. Its totient is φ = 835266816.

The previous prime is 2656651511. The next prime is 2656651601. The reversal of 2656651554 is 4551566562.

2656651554 is a `hidden beast` number, since 26 + 5 + 66 + 515 + 54 = 666.

It is a super-2 number, since 2×2656651554² = 14115594958741229832, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233502 + ... + 244614.

It is an arithmetic number, because the mean of its divisors is an integer number (97525350).

Almost surely, 2^2656651554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656651554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3120811200).

2656651554 is an abundant number, since it is smaller than the sum of its proper divisors (3584970846).

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

2656651554 is a wasteful number, since it uses less digits than its factorization.

2656651554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11376 (or 11370 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The square root of 2656651554 is about 51542.7158190175. The cubic root of 2656651554 is about 1384.9843480270.

The spelling of 2656651554 in words is "two billion, six hundred fifty-six million, six hundred fifty-one thousand, five hundred fifty-four".