2554433778 has 16 divisors (see below), whose sum is σ = 5501857536. Its totient is φ = 785979600.

The previous prime is 2554433773. The next prime is 2554433801. The reversal of 2554433778 is 8773344552.

It is not an unprimeable number, because it can be changed into a prime (2554433773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16374498 + ... + 16374653.

It is an arithmetic number, because the mean of its divisors is an integer number (343866096).

Almost surely, 2^2554433778 is an apocalyptic number.

2554433778 is an abundant number, since it is smaller than the sum of its proper divisors (2947423758).

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

2554433778 is a wasteful number, since it uses less digits than its factorization.

2554433778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32749169.

The product of its digits is 2822400, while the sum is 48.

The square root of 2554433778 is about 50541.4065692675. The cubic root of 2554433778 is about 1366.9885685391.

The spelling of 2554433778 in words is "two billion, five hundred fifty-four million, four hundred thirty-three thousand, seven hundred seventy-eight".