5615259864 has 64 divisors (see below), whose sum is σ = 14471913600. Its totient is φ = 1814789376.

The previous prime is 5615259863. The next prime is 5615259889. The reversal of 5615259864 is 4689525165.

It is a happy number.

It is a super-2 number, since 2×5615259864² = 63062286680498596992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5615259863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76207 + ... + 130529.

It is an arithmetic number, because the mean of its divisors is an integer number (226123650).

Almost surely, 2^5615259864 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 5615259864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7235956800).

5615259864 is an abundant number, since it is smaller than the sum of its proper divisors (8856653736).

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

5615259864 is a wasteful number, since it uses less digits than its factorization.

5615259864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54464 (or 54460 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 51.

The square root of 5615259864 is about 74935.0376259330. The cubic root of 5615259864 is about 1777.4195517880.

The spelling of 5615259864 in words is "five billion, six hundred fifteen million, two hundred fifty-nine thousand, eight hundred sixty-four".