5215781748 has 12 divisors (see below), whose sum is σ = 12170157440. Its totient is φ = 1738593912.

The previous prime is 5215781741. The next prime is 5215781761. The reversal of 5215781748 is 8471875125.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 5215781697 and 5215781706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215781741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217324228 + ... + 217324251.

Almost surely, 2^5215781748 is an apocalyptic number.

It is an amenable number.

5215781748 is an abundant number, since it is smaller than the sum of its proper divisors (6954375692).

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

5215781748 is a wasteful number, since it uses less digits than its factorization.

5215781748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434648486 (or 434648484 counting only the distinct ones).

The product of its digits is 627200, while the sum is 48.

The square root of 5215781748 is about 72220.3693427277. The cubic root of 5215781748 is about 1734.2291030537.

The spelling of 5215781748 in words is "five billion, two hundred fifteen million, seven hundred eighty-one thousand, seven hundred forty-eight".