2561427372 has 36 divisors (see below), whose sum is σ = 6952447320. Its totient is φ = 731836224.

The previous prime is 2561427371. The next prime is 2561427391. The reversal of 2561427372 is 2737241652.

It is a self number, because there is not a number n which added to its sum of digits gives 2561427372.

It is not an unprimeable number, because it can be changed into a prime (2561427371) 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, 2177497 + ... + 2178672.

Almost surely, 2^2561427372 is an apocalyptic number.

It is an amenable number.

2561427372 is an abundant number, since it is smaller than the sum of its proper divisors (4391019948).

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

2561427372 is a wasteful number, since it uses less digits than its factorization.

2561427372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356190 (or 4356181 counting only the distinct ones).

The product of its digits is 141120, while the sum is 39.

The square root of 2561427372 is about 50610.5460551455. The cubic root of 2561427372 is about 1368.2349571639.

The spelling of 2561427372 in words is "two billion, five hundred sixty-one million, four hundred twenty-seven thousand, three hundred seventy-two".