5218778357910 has 256 divisors, whose sum is σ = 15888578872320. Its totient is φ = 1207554324480.

The previous prime is 5218778357857. The next prime is 5218778357939. The reversal of 5218778357910 is 197538778125.

5218778357910 is a `hidden beast` number, since 52 + 1 + 8 + 7 + 7 + 8 + 3 + 579 + 1 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 48338449 + ... + 48446291.

It is an arithmetic number, because the mean of its divisors is an integer number (62064761220).

Almost surely, 2^{5218778357910} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5218778357910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7944289436160).

5218778357910 is an abundant number, since it is smaller than the sum of its proper divisors (10669800514410).

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

5218778357910 is a wasteful number, since it uses less digits than its factorization.

5218778357910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108700 (or 108694 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 63.

The spelling of 5218778357910 in words is "five trillion, two hundred eighteen billion, seven hundred seventy-eight million, three hundred fifty-seven thousand, nine hundred ten".