2556497016 has 24 divisors (see below), whose sum is σ = 6923846280. Its totient is φ = 852165648.

The previous prime is 2556496979. The next prime is 2556497039. The reversal of 2556497016 is 6107946552.

2556497016 is a `hidden beast` number, since 2 + 5 + 564 + 9 + 70 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17753380 + ... + 17753523.

It is an arithmetic number, because the mean of its divisors is an integer number (288493595).

Almost surely, 2^2556497016 is an apocalyptic number.

It is an amenable number.

2556497016 is an abundant number, since it is smaller than the sum of its proper divisors (4367349264).

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

2556497016 is a wasteful number, since it uses less digits than its factorization.

2556497016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35506915 (or 35506908 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 2556497016 is about 50561.8138124019. The cubic root of 2556497016 is about 1367.3565122774.

The spelling of 2556497016 in words is "two billion, five hundred fifty-six million, four hundred ninety-seven thousand, sixteen".