2551400128 has 28 divisors (see below), whose sum is σ = 5091242040. Its totient is φ = 1268567552.

The previous prime is 2551400119. The next prime is 2551400129. The reversal of 2551400128 is 8210041552.

It is a super-2 number, since 2×2551400128² = 13019285226316832768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2551400096 and 2551400105.

It is not an unprimeable number, because it can be changed into a prime (2551400129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99901 + ... + 122812.

Almost surely, 2^2551400128 is an apocalyptic number.

It is an amenable number.

2551400128 is a deficient number, since it is larger than the sum of its proper divisors (2539841912).

2551400128 is a wasteful number, since it uses less digits than its factorization.

2551400128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222904 (or 222894 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 2551400128 is about 50511.3861223388. The cubic root of 2551400128 is about 1366.4472081747.

The spelling of 2551400128 in words is "two billion, five hundred fifty-one million, four hundred thousand, one hundred twenty-eight".