5217307878 has 16 divisors (see below), whose sum is σ = 10437523776. Its totient is φ = 1738617960.

The previous prime is 5217307867. The next prime is 5217307903. The reversal of 5217307878 is 8787037125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97488 + ... + 141203.

It is an arithmetic number, because the mean of its divisors is an integer number (652345236).

Almost surely, 2^5217307878 is an apocalyptic number.

5217307878 is an abundant number, since it is smaller than the sum of its proper divisors (5220215898).

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

5217307878 is a wasteful number, since it uses less digits than its factorization.

5217307878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242339.

The product of its (nonzero) digits is 658560, while the sum is 48.

The square root of 5217307878 is about 72230.9343564099. The cubic root of 5217307878 is about 1734.3982308467.

The spelling of 5217307878 in words is "five billion, two hundred seventeen million, three hundred seven thousand, eight hundred seventy-eight".