2644555345 has 16 divisors (see below), whose sum is σ = 3277428480. Its totient is φ = 2047348864.

The previous prime is 2644555339. The next prime is 2644555351. The reversal of 2644555345 is 5435554462.

It is an interprime number because it is at equal distance from previous prime (2644555339) and next prime (2644555351).

It is a cyclic number.

It is not a de Polignac number, because 2644555345 - 2⁷ = 2644555217 is a prime.

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, 42307 + ... + 84136.

It is an arithmetic number, because the mean of its divisors is an integer number (204839280).

Almost surely, 2^2644555345 is an apocalyptic number.

It is an amenable number.

2644555345 is a deficient number, since it is larger than the sum of its proper divisors (632873135).

2644555345 is a wasteful number, since it uses less digits than its factorization.

2644555345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126584.

The product of its digits is 1440000, while the sum is 43.

The square root of 2644555345 is about 51425.2403494626. The cubic root of 2644555345 is about 1382.8791225999.

The spelling of 2644555345 in words is "two billion, six hundred forty-four million, five hundred fifty-five thousand, three hundred forty-five".