5615538732 has 144 divisors (see below), whose sum is σ = 15182465760. Its totient is φ = 1794441600.

The previous prime is 5615538703. The next prime is 5615538739. The reversal of 5615538732 is 2378355165.

5615538732 is a `hidden beast` number, since 5 + 61 + 553 + 8 + 7 + 32 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5615538739) 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, 12180982 + ... + 12181442.

It is an arithmetic number, because the mean of its divisors is an integer number (105433790).

Almost surely, 2^5615538732 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 5615538732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7591232880).

5615538732 is an abundant number, since it is smaller than the sum of its proper divisors (9566927028).

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

5615538732 is a wasteful number, since it uses less digits than its factorization.

5615538732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 570 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 5615538732 is about 74936.8983345321. The cubic root of 5615538732 is about 1777.4489750170.

The spelling of 5615538732 in words is "five billion, six hundred fifteen million, five hundred thirty-eight thousand, seven hundred thirty-two".