2554120644 has 12 divisors (see below), whose sum is σ = 5959614864. Its totient is φ = 851373544.

The previous prime is 2554120643. The next prime is 2554120649. The reversal of 2554120644 is 4460214552.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2554120643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106421682 + ... + 106421705.

It is an arithmetic number, because the mean of its divisors is an integer number (496634572).

Almost surely, 2^2554120644 is an apocalyptic number.

It is an amenable number.

2554120644 is an abundant number, since it is smaller than the sum of its proper divisors (3405494220).

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

2554120644 is a wasteful number, since it uses less digits than its factorization.

2554120644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212843394 (or 212843392 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 2554120644 is about 50538.3086776754. The cubic root of 2554120644 is about 1366.9327090509.

The spelling of 2554120644 in words is "two billion, five hundred fifty-four million, one hundred twenty thousand, six hundred forty-four".