2550673665 has 64 divisors (see below), whose sum is σ = 4760985600. Its totient is φ = 1293158592.

The previous prime is 2550673661. The next prime is 2550673679. The reversal of 2550673665 is 5663760552.

2550673665 is a `hidden beast` number, since 2 + 550 + 6 + 7 + 36 + 65 = 666.

It is not a de Polignac number, because 2550673665 - 2² = 2550673661 is a prime.

It is a super-2 number, since 2×2550673665² = 13011872290649064450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2550673665.

It is not an unprimeable number, because it can be changed into a prime (2550673661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 516076 + ... + 520994.

It is an arithmetic number, because the mean of its divisors is an integer number (74390400).

Almost surely, 2^2550673665 is an apocalyptic number.

It is an amenable number.

2550673665 is a deficient number, since it is larger than the sum of its proper divisors (2210311935).

2550673665 is a wasteful number, since it uses less digits than its factorization.

2550673665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123 (or 5117 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The square root of 2550673665 is about 50504.1945287716. The cubic root of 2550673665 is about 1366.3175058520.

The spelling of 2550673665 in words is "two billion, five hundred fifty million, six hundred seventy-three thousand, six hundred sixty-five".