2544640023 has 8 divisors (see below), whose sum is σ = 3418753536. Its totient is φ = 1683476600.

The previous prime is 2544639997. The next prime is 2544640027. The reversal of 2544640023 is 3200464452.

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 2544640023 - 2⁹ = 2544639511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544640027) 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, 3237063 + ... + 3237848.

It is an arithmetic number, because the mean of its divisors is an integer number (427344192).

Almost surely, 2^2544640023 is an apocalyptic number.

2544640023 is a deficient number, since it is larger than the sum of its proper divisors (874113513).

2544640023 is a wasteful number, since it uses less digits than its factorization.

2544640023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475045.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 2544640023 is about 50444.4250933639. The cubic root of 2544640023 is about 1365.2393097039.

The spelling of 2544640023 in words is "two billion, five hundred forty-four million, six hundred forty thousand, twenty-three".