521342121068 has 6 divisors (see below), whose sum is σ = 912348711876. Its totient is φ = 260671060532.

The previous prime is 521342121061. The next prime is 521342121071. The reversal of 521342121068 is 860121243125.

It is not an unprimeable number, because it can be changed into a prime (521342121061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65167765130 + ... + 65167765137.

It is an arithmetic number, because the mean of its divisors is an integer number (152058118646).

Almost surely, 2^521342121068 is an apocalyptic number.

It is an amenable number.

521342121068 is a deficient number, since it is larger than the sum of its proper divisors (391006590808).

521342121068 is a wasteful number, since it uses less digits than its factorization.

521342121068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130335530271 (or 130335530269 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 521342121068 in words is "five hundred twenty-one billion, three hundred forty-two million, one hundred twenty-one thousand, sixty-eight".