615320416240 has 160 divisors (see below), whose sum is σ = 1484018766720. Its totient is φ = 237086134272.

The previous prime is 615320416211. The next prime is 615320416241. The reversal of 615320416240 is 42614023516.

It is a junction number, because it is equal to n+sod(n) for n = 615320416196 and 615320416205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615320416241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136160701 + ... + 136165219.

It is an arithmetic number, because the mean of its divisors is an integer number (9275117292).

Almost surely, 2^615320416240 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 615320416240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742009383360).

615320416240 is an abundant number, since it is smaller than the sum of its proper divisors (868698350480).

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

615320416240 is a wasteful number, since it uses less digits than its factorization.

615320416240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019 (or 5013 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 615320416240 its reverse (42614023516), we get a palindrome (657934439756).

The spelling of 615320416240 in words is "six hundred fifteen billion, three hundred twenty million, four hundred sixteen thousand, two hundred forty".