2561672360551 has 12 divisors (see below), whose sum is σ = 2642081450232. Its totient is φ = 2483630395488.

The previous prime is 2561672360537. The next prime is 2561672360563. The reversal of 2561672360551 is 1550632761652.

2561672360551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2561672360551 - 2¹³ = 2561672352359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2561672360495 and 2561672360504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561672360251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2918580 + ... + 3693433.

It is an arithmetic number, because the mean of its divisors is an integer number (220173454186).

Almost surely, 2^{2561672360551} is an apocalyptic number.

2561672360551 is a deficient number, since it is larger than the sum of its proper divisors (80409089681).

2561672360551 is an equidigital number, since it uses as much as digits as its factorization.

2561672360551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612370 (or 6612333 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 2561672360551 in words is "two trillion, five hundred sixty-one billion, six hundred seventy-two million, three hundred sixty thousand, five hundred fifty-one".