521190526079 has 4 divisors (see below), whose sum is σ = 526563624384. Its totient is φ = 515817427776.

The previous prime is 521190526067. The next prime is 521190526123. The reversal of 521190526079 is 970625091125.

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

It is a cyclic number.

It is not a de Polignac number, because 521190526079 - 2¹⁶ = 521190460543 is a prime.

It is a super-2 number, since 2×521190526079² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521190526039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686549007 + ... + 2686549200.

It is an arithmetic number, because the mean of its divisors is an integer number (131640906096).

Almost surely, 2^521190526079 is an apocalyptic number.

521190526079 is a deficient number, since it is larger than the sum of its proper divisors (5373098305).

521190526079 is an equidigital number, since it uses as much as digits as its factorization.

521190526079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373098304.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 521190526079 in words is "five hundred twenty-one billion, one hundred ninety million, five hundred twenty-six thousand, seventy-nine".