2552777665 has 16 divisors (see below), whose sum is σ = 3111765120. Its totient is φ = 2010032640.

The previous prime is 2552777641. The next prime is 2552777753. The reversal of 2552777665 is 5667772552.

It is a happy number.

It is not a de Polignac number, because 2552777665 - 2¹³ = 2552769473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213937 + ... + 225553.

It is an arithmetic number, because the mean of its divisors is an integer number (194485320).

Almost surely, 2^2552777665 is an apocalyptic number.

It is an amenable number.

2552777665 is a deficient number, since it is larger than the sum of its proper divisors (558987455).

2552777665 is a wasteful number, since it uses less digits than its factorization.

2552777665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312.

The product of its digits is 6174000, while the sum is 52.

The square root of 2552777665 is about 50525.0201880217. The cubic root of 2552777665 is about 1366.6930853178.

The spelling of 2552777665 in words is "two billion, five hundred fifty-two million, seven hundred seventy-seven thousand, six hundred sixty-five".