5312642544 has 120 divisors (see below), whose sum is σ = 16238804400. Its totient is φ = 1607992320.

The previous prime is 5312642539. The next prime is 5312642549. The reversal of 5312642544 is 4452462135.

5312642544 is a `hidden beast` number, since 5 + 3 + 1 + 2 + 642 + 5 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (5312642539) and next prime (5312642549).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5312642499 and 5312642508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5312642549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1945372 + ... + 1948100.

It is an arithmetic number, because the mean of its divisors is an integer number (135323370).

Almost surely, 2^5312642544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5312642544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8119402200).

5312642544 is an abundant number, since it is smaller than the sum of its proper divisors (10926161856).

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

5312642544 is a wasteful number, since it uses less digits than its factorization.

5312642544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983 (or 3974 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 5312642544 is about 72887.8765227798. The cubic root of 5312642544 is about 1744.8986177118.

The spelling of 5312642544 in words is "five billion, three hundred twelve million, six hundred forty-two thousand, five hundred forty-four".