2556696742 has 8 divisors (see below), whose sum is σ = 4060636056. Its totient is φ = 1203151392.

The previous prime is 2556696719. The next prime is 2556696757. The reversal of 2556696742 is 2476966552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2556696742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37598448 + ... + 37598515.

It is an arithmetic number, because the mean of its divisors is an integer number (507579507).

Almost surely, 2^2556696742 is an apocalyptic number.

2556696742 is a deficient number, since it is larger than the sum of its proper divisors (1503939314).

2556696742 is a wasteful number, since it uses less digits than its factorization.

2556696742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75196982.

The product of its digits is 5443200, while the sum is 52.

The square root of 2556696742 is about 50563.7888414229. The cubic root of 2556696742 is about 1367.3921195339.

The spelling of 2556696742 in words is "two billion, five hundred fifty-six million, six hundred ninety-six thousand, seven hundred forty-two".