2556161662 has 16 divisors (see below), whose sum is σ = 3854340000. Its totient is φ = 1271391840.

The previous prime is 2556161653. The next prime is 2556161681. The reversal of 2556161662 is 2661616552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850839 + ... + 853837.

It is an arithmetic number, because the mean of its divisors is an integer number (240896250).

Almost surely, 2^2556161662 is an apocalyptic number.

2556161662 is a deficient number, since it is larger than the sum of its proper divisors (1298178338).

2556161662 is a wasteful number, since it uses less digits than its factorization.

2556161662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091.

The product of its digits is 129600, while the sum is 40.

The square root of 2556161662 is about 50558.4974262487. The cubic root of 2556161662 is about 1367.2967210181.

The spelling of 2556161662 in words is "two billion, five hundred fifty-six million, one hundred sixty-one thousand, six hundred sixty-two".