5215653720 has 256 divisors, whose sum is σ = 18713980800. Its totient is φ = 1287290880.

The previous prime is 5215653697. The next prime is 5215653721. The reversal of 5215653720 is 273565125.

5215653720 is a `hidden beast` number, since 5 + 21 + 565 + 3 + 72 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215653721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1117632 + ... + 1122288.

Almost surely, 2^5215653720 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 5215653720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9356990400).

5215653720 is an abundant number, since it is smaller than the sum of its proper divisors (13498327080).

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

5215653720 is a wasteful number, since it uses less digits than its factorization.

5215653720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755 (or 4745 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 5215653720 is about 72219.4829668560. The cubic root of 5215653720 is about 1734.2149133176.

The spelling of 5215653720 in words is "five billion, two hundred fifteen million, six hundred fifty-three thousand, seven hundred twenty".