2605633668318 has 128 divisors (see below), whose sum is σ = 5759402803200. Its totient is φ = 782680060800.

The previous prime is 2605633668271. The next prime is 2605633668371. The reversal of 2605633668318 is 8138663365062.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 384365053 + ... + 384371831.

It is an arithmetic number, because the mean of its divisors is an integer number (44995334400).

Almost surely, 2^{2605633668318} is an apocalyptic number.

2605633668318 is an abundant number, since it is smaller than the sum of its proper divisors (3153769134882).

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

2605633668318 is a wasteful number, since it uses less digits than its factorization.

2605633668318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8678.

The product of its (nonzero) digits is 22394880, while the sum is 57.

The spelling of 2605633668318 in words is "two trillion, six hundred five billion, six hundred thirty-three million, six hundred sixty-eight thousand, three hundred eighteen".