6516544023 has 48 divisors (see below), whose sum is σ = 11345308416. Its totient is φ = 3555467520.

The previous prime is 6516543997. The next prime is 6516544087. The reversal of 6516544023 is 3204456156.

It is not a de Polignac number, because 6516544023 - 2⁵ = 6516543991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516544823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45465 + ... + 122882.

It is an arithmetic number, because the mean of its divisors is an integer number (236360592).

Almost surely, 2^6516544023 is an apocalyptic number.

6516544023 is a deficient number, since it is larger than the sum of its proper divisors (4828764393).

6516544023 is a wasteful number, since it uses less digits than its factorization.

6516544023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168404 (or 168401 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 6516544023 is about 80725.1139547043. The cubic root of 6516544023 is about 1867.8375895455.

The spelling of 6516544023 in words is "six billion, five hundred sixteen million, five hundred forty-four thousand, twenty-three".