2605500616920 has 64 divisors (see below), whose sum is σ = 7816687734240. Its totient is φ = 694783641600.

The previous prime is 2605500616883. The next prime is 2605500616951. The reversal of 2605500616920 is 296160055062.

It is a congruent number.

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, 5306640 + ... + 5776800.

Almost surely, 2^{2605500616920} is an apocalyptic number.

2605500616920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605500616920 is an abundant number, since it is smaller than the sum of its proper divisors (5211187117320).

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

2605500616920 is a wasteful number, since it uses less digits than its factorization.

2605500616920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516356 (or 516352 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 2605500616920 in words is "two trillion, six hundred five billion, five hundred million, six hundred sixteen thousand, nine hundred twenty".