5217804781618 has 64 divisors (see below), whose sum is σ = 9493176397824. Its totient is φ = 2118320424000.

The previous prime is 5217804781601. The next prime is 5217804781723. The reversal of 5217804781618 is 8161874087125.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58213705 + ... + 58303267.

It is an arithmetic number, because the mean of its divisors is an integer number (148330881216).

Almost surely, 2^{5217804781618} is an apocalyptic number.

5217804781618 is a deficient number, since it is larger than the sum of its proper divisors (4275371616206).

5217804781618 is a wasteful number, since it uses less digits than its factorization.

5217804781618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96191.

The product of its (nonzero) digits is 6021120, while the sum is 58.

The spelling of 5217804781618 in words is "five trillion, two hundred seventeen billion, eight hundred four million, seven hundred eighty-one thousand, six hundred eighteen".