2561374277630 has 32 divisors (see below), whose sum is σ = 5274896808960. Its totient is φ = 877221465120.

The previous prime is 2561374277573. The next prime is 2561374277641. The reversal of 2561374277630 is 367724731652.

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, 20019140 + ... + 20146679.

It is an arithmetic number, because the mean of its divisors is an integer number (164840525280).

Almost surely, 2^{2561374277630} is an apocalyptic number.

2561374277630 is an abundant number, since it is smaller than the sum of its proper divisors (2713522531330).

2561374277630 is a wasteful number, since it uses less digits than its factorization.

2561374277630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40166744.

The product of its (nonzero) digits is 8890560, while the sum is 53.

The spelling of 2561374277630 in words is "two trillion, five hundred sixty-one billion, three hundred seventy-four million, two hundred seventy-seven thousand, six hundred thirty".