2771612655 has 32 divisors (see below), whose sum is σ = 5092151808. Its totient is φ = 1261008000.

The previous prime is 2771612639. The next prime is 2771612689. The reversal of 2771612655 is 5562161772.

It is a happy number.

It is not a de Polignac number, because 2771612655 - 2⁴ = 2771612639 is a prime.

It is a super-2 number, since 2×2771612655² = 15363673418712298050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40396 + ... + 84705.

It is an arithmetic number, because the mean of its divisors is an integer number (159129744).

Almost surely, 2^2771612655 is an apocalyptic number.

2771612655 is a deficient number, since it is larger than the sum of its proper divisors (2320539153).

2771612655 is a wasteful number, since it uses less digits than its factorization.

2771612655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125327.

The product of its digits is 176400, while the sum is 42.

The square root of 2771612655 is about 52646.1076908825. The cubic root of 2771612655 is about 1404.6803653114.

The spelling of 2771612655 in words is "two billion, seven hundred seventy-one million, six hundred twelve thousand, six hundred fifty-five".