2645517798 has 96 divisors (see below), whose sum is σ = 7566773760. Its totient is φ = 646721280.

The previous prime is 2645517757. The next prime is 2645517821. The reversal of 2645517798 is 8977155462.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32578 + ... + 79701.

It is an arithmetic number, because the mean of its divisors is an integer number (78820560).

Almost surely, 2^2645517798 is an apocalyptic number.

2645517798 is an abundant number, since it is smaller than the sum of its proper divisors (4921255962).

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

2645517798 is a wasteful number, since it uses less digits than its factorization.

2645517798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112322 (or 112319 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The square root of 2645517798 is about 51434.5972862625. The cubic root of 2645517798 is about 1383.0468628003.

It can be divided in two parts, 26455 and 17798, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 2645517798 in words is "two billion, six hundred forty-five million, five hundred seventeen thousand, seven hundred ninety-eight".