2645522632656 has 80 divisors (see below), whose sum is σ = 7594994901120. Its totient is φ = 881682347520.

The previous prime is 2645522632633. The next prime is 2645522632679. The reversal of 2645522632656 is 6562362255462.

2645522632656 is a `hidden beast` number, since 2 + 6 + 4 + 5 + 522 + 63 + 2 + 6 + 56 = 666.

It is an interprime number because it is at equal distance from previous prime (2645522632633) and next prime (2645522632679).

It is a super-2 number, since 2×2645522632656² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1867656 + ... + 2962968.

It is an arithmetic number, because the mean of its divisors is an integer number (94937436264).

Almost surely, 2^{2645522632656} is an apocalyptic number.

It is an amenable number.

2645522632656 is an abundant number, since it is smaller than the sum of its proper divisors (4949472268464).

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

2645522632656 is a wasteful number, since it uses less digits than its factorization.

2645522632656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100921 (or 1100909 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 2645522632656 in words is "two trillion, six hundred forty-five billion, five hundred twenty-two million, six hundred thirty-two thousand, six hundred fifty-six".