2545767664 has 20 divisors (see below), whose sum is σ = 5380827480. Its totient is φ = 1157167040.

The previous prime is 2545767641. The next prime is 2545767677. The reversal of 2545767664 is 4667675452.

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, 7232119 + ... + 7232470.

It is an arithmetic number, because the mean of its divisors is an integer number (269041374).

Almost surely, 2^2545767664 is an apocalyptic number.

It is an amenable number.

2545767664 is an abundant number, since it is smaller than the sum of its proper divisors (2835059816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545767664 is a wasteful number, since it uses less digits than its factorization.

2545767664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14464608 (or 14464602 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 52.

The square root of 2545767664 is about 50455.6009180349. The cubic root of 2545767664 is about 1365.4409456204.

The spelling of 2545767664 in words is "two billion, five hundred forty-five million, seven hundred sixty-seven thousand, six hundred sixty-four".