2556145936 has 10 divisors (see below), whose sum is σ = 4952532782. Its totient is φ = 1278072960.

The previous prime is 2556145919. The next prime is 2556145979. The reversal of 2556145936 is 6395416552.

It can be written as a sum of positive squares in only one way, i.e., 2445895936 + 110250000 = 49456^2 + 10500^2 .

It is a super-2 number, since 2×2556145936² = 13067764092258632192, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79879545 + ... + 79879576.

Almost surely, 2^2556145936 is an apocalyptic number.

It is an amenable number.

2556145936 is a deficient number, since it is larger than the sum of its proper divisors (2396386846).

2556145936 is a wasteful number, since it uses less digits than its factorization.

2556145936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159759129 (or 159759123 counting only the distinct ones).

The product of its digits is 972000, while the sum is 46.

The square root of 2556145936 is about 50558.3419031914. The cubic root of 2556145936 is about 1367.2939170546.

The spelling of 2556145936 in words is "two billion, five hundred fifty-six million, one hundred forty-five thousand, nine hundred thirty-six".