521934408706 has 4 divisors (see below), whose sum is σ = 782901613062. Its totient is φ = 260967204352.

The previous prime is 521934408691. The next prime is 521934408767. The reversal of 521934408706 is 607804439125.

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., 280174369225 + 241760039481 = 529315^2 + 491691^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 521934408706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130483602175 + ... + 130483602178.

It is a 1-persistent number, because it is pandigital, but 2⋅521934408706 = 1043868817412 is not.

Almost surely, 2^521934408706 is an apocalyptic number.

521934408706 is a deficient number, since it is larger than the sum of its proper divisors (260967204356).

521934408706 is a wasteful number, since it uses less digits than its factorization.

521934408706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260967204355.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 521934408706 in words is "five hundred twenty-one billion, nine hundred thirty-four million, four hundred eight thousand, seven hundred six".