2645921057 has 8 divisors (see below), whose sum is σ = 2999424960. Its totient is φ = 2313841680.

The previous prime is 2645921039. The next prime is 2645921077. The reversal of 2645921057 is 7501295462.

2645921057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2645921057 - 2¹⁶ = 2645855521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645921027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5355869 + ... + 5356362.

It is an arithmetic number, because the mean of its divisors is an integer number (374928120).

Almost surely, 2^2645921057 is an apocalyptic number.

It is an amenable number.

2645921057 is a deficient number, since it is larger than the sum of its proper divisors (353503903).

2645921057 is a wasteful number, since it uses less digits than its factorization.

2645921057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10712263.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 2645921057 is about 51438.5172511806. The cubic root of 2645921057 is about 1383.1171323155.

The spelling of 2645921057 in words is "two billion, six hundred forty-five million, nine hundred twenty-one thousand, fifty-seven".