2640522654 has 96 divisors (see below), whose sum is σ = 7552486656. Its totient is φ = 645500160.

The previous prime is 2640522611. The next prime is 2640522673. The reversal of 2640522654 is 4562250462.

2640522654 = T₁₃₉₇₂ + T₁₃₉₇₃ + ... + T₁₃₉₉₈.

2640522654 is a `hidden beast` number, since 2 + 640 + 5 + 2 + 2 + 6 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32472 + ... + 79595.

It is an arithmetic number, because the mean of its divisors is an integer number (78671736).

Almost surely, 2^2640522654 is an apocalyptic number.

2640522654 is an abundant number, since it is smaller than the sum of its proper divisors (4911964002).

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

2640522654 is a wasteful number, since it uses less digits than its factorization.

2640522654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112110 (or 112107 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 2640522654 is about 51386.0161327963. The cubic root of 2640522654 is about 1382.1758460533.

The spelling of 2640522654 in words is "two billion, six hundred forty million, five hundred twenty-two thousand, six hundred fifty-four".