2581164022590 has 48 divisors (see below), whose sum is σ = 6735254056128. Its totient is φ = 685825524288.

The previous prime is 2581164022543. The next prime is 2581164022603. The reversal of 2581164022590 is 952204611852.

2581164022590 is a `hidden beast` number, since 2 + 5 + 8 + 1 + 16 + 40 + 2 + 2 + 590 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 51743302 + ... + 51793161.

It is an arithmetic number, because the mean of its divisors is an integer number (140317792836).

Almost surely, 2^{2581164022590} is an apocalyptic number.

2581164022590 is an abundant number, since it is smaller than the sum of its proper divisors (4154090033538).

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

2581164022590 is a wasteful number, since it uses less digits than its factorization.

2581164022590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103536753 (or 103536750 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 2581164022590 in words is "two trillion, five hundred eighty-one billion, one hundred sixty-four million, twenty-two thousand, five hundred ninety".