521885680242842 has 8 divisors (see below), whose sum is σ = 782844979277856. Its totient is φ = 260937353816892.

The previous prime is 521885680242821. The next prime is 521885680242853. The reversal of 521885680242842 is 248242086588125.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2743033358 + ... + 2743223609.

It is an arithmetic number, because the mean of its divisors is an integer number (97855622409732).

Almost surely, 2^{521885680242842} is an apocalyptic number.

521885680242842 is a deficient number, since it is larger than the sum of its proper divisors (260959299035014).

521885680242842 is a wasteful number, since it uses less digits than its factorization.

521885680242842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5486304532.

The product of its (nonzero) digits is 157286400, while the sum is 65.

The spelling of 521885680242842 in words is "five hundred twenty-one trillion, eight hundred eighty-five billion, six hundred eighty million, two hundred forty-two thousand, eight hundred forty-two".