2551378330 has 24 divisors (see below), whose sum is σ = 4846918932. Its totient is φ = 966836736.

The previous prime is 2551378267. The next prime is 2551378363. The reversal of 2551378330 is 338731552.

It can be written as a sum of positive squares in 2 ways, for example, as 2408551929 + 142826401 = 49077^2 + 11951^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2551378330.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349767 + ... + 356986.

Almost surely, 2^2551378330 is an apocalyptic number.

2551378330 is a deficient number, since it is larger than the sum of its proper divisors (2295540602).

2551378330 is a wasteful number, since it uses less digits than its factorization.

2551378330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706798 (or 706779 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 2551378330 is about 50511.1703487456. The cubic root of 2551378330 is about 1366.4433167295.

The spelling of 2551378330 in words is "two billion, five hundred fifty-one million, three hundred seventy-eight thousand, three hundred thirty".