521379412346 has 16 divisors (see below), whose sum is σ = 878846903424. Its totient is φ = 230174188464.

The previous prime is 521379412249. The next prime is 521379412381. The reversal of 521379412346 is 643214973125.

It is a self number, because there is not a number n which added to its sum of digits gives 521379412346.

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, 435935366 + ... + 435936561.

It is an arithmetic number, because the mean of its divisors is an integer number (54927931464).

Almost surely, 2^521379412346 is an apocalyptic number.

521379412346 is a deficient number, since it is larger than the sum of its proper divisors (357467491078).

521379412346 is a wasteful number, since it uses less digits than its factorization.

521379412346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871871965.

The product of its digits is 1088640, while the sum is 47.

The spelling of 521379412346 in words is "five hundred twenty-one billion, three hundred seventy-nine million, four hundred twelve thousand, three hundred forty-six".