2535281664 has 44 divisors (see below), whose sum is σ = 6757458144. Its totient is φ = 845092864.

The previous prime is 2535281633. The next prime is 2535281669. The reversal of 2535281664 is 4661825352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2535281669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409572 + ... + 415715.

Almost surely, 2^2535281664 is an apocalyptic number.

2535281664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2535281664 is an abundant number, since it is smaller than the sum of its proper divisors (4222176480).

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

2535281664 is an equidigital number, since it uses as much as digits as its factorization.

2535281664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825310 (or 825292 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 2535281664 is about 50351.5805511605. The cubic root of 2535281664 is about 1363.5636183125.

The spelling of 2535281664 in words is "two billion, five hundred thirty-five million, two hundred eighty-one thousand, six hundred sixty-four".