2564648074550 has 48 divisors (see below), whose sum is σ = 4926571619712. Its totient is φ = 992273587200.

The previous prime is 2564648074543. The next prime is 2564648074567. The reversal of 2564648074550 is 554708464652.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2716184 + ... + 3536516.

It is an arithmetic number, because the mean of its divisors is an integer number (102636908744).

Almost surely, 2^{2564648074550} is an apocalyptic number.

2564648074550 is a deficient number, since it is larger than the sum of its proper divisors (2361923545162).

2564648074550 is a wasteful number, since it uses less digits than its factorization.

2564648074550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822393 (or 822388 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 56.

The spelling of 2564648074550 in words is "two trillion, five hundred sixty-four billion, six hundred forty-eight million, seventy-four thousand, five hundred fifty".