521899259914 has 4 divisors (see below), whose sum is σ = 782848889874. Its totient is φ = 260949629956.

The previous prime is 521899259909. The next prime is 521899259927. The reversal of 521899259914 is 419952998125.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 464858058025 + 57041201889 = 681805^2 + 238833^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130474814977 + ... + 130474814980.

Almost surely, 2^521899259914 is an apocalyptic number.

521899259914 is a deficient number, since it is larger than the sum of its proper divisors (260949629960).

521899259914 is a wasteful number, since it uses less digits than its factorization.

521899259914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260949629959.

The product of its digits is 20995200, while the sum is 64.

The spelling of 521899259914 in words is "five hundred twenty-one billion, eight hundred ninety-nine million, two hundred fifty-nine thousand, nine hundred fourteen".