5275615644 has 192 divisors, whose sum is σ = 15833664000. Its totient is φ = 1504521216.

The previous prime is 5275615637. The next prime is 5275615663. The reversal of 5275615644 is 4465165725.

5275615644 is a `hidden beast` number, since 5 + 27 + 5 + 61 + 564 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5275615644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1597507 + ... + 1600805.

It is an arithmetic number, because the mean of its divisors is an integer number (82467000).

Almost surely, 2^5275615644 is an apocalyptic number.

5275615644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5275615644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7916832000).

5275615644 is an abundant number, since it is smaller than the sum of its proper divisors (10558048356).

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

5275615644 is a wasteful number, since it uses less digits than its factorization.

5275615644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409 (or 3401 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 5275615644 is about 72633.4333760975. The cubic root of 5275615644 is about 1740.8354252207.

The spelling of 5275615644 in words is "five billion, two hundred seventy-five million, six hundred fifteen thousand, six hundred forty-four".