2561521056922 has 32 divisors (see below), whose sum is σ = 3912949296000. Its totient is φ = 1257337329600.

The previous prime is 2561521056793. The next prime is 2561521056971. The reversal of 2561521056922 is 2296501251652.

2561521056922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2561521056922² (a number of 26 digits) contains 22 as substring.

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, 284640579 + ... + 284649577.

It is an arithmetic number, because the mean of its divisors is an integer number (122279665500).

Almost surely, 2^{2561521056922} is an apocalyptic number.

2561521056922 is a deficient number, since it is larger than the sum of its proper divisors (1351428239078).

2561521056922 is a wasteful number, since it uses less digits than its factorization.

2561521056922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16086.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 2561521056922 in words is "two trillion, five hundred sixty-one billion, five hundred twenty-one million, fifty-six thousand, nine hundred twenty-two".