520013646146623 has 4 divisors (see below), whose sum is σ = 532106986754728. Its totient is φ = 507920305538520.

The previous prime is 520013646146581. The next prime is 520013646146653. The reversal of 520013646146623 is 326641646310025.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520013646146623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520013646146653) 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, 6046670303988 + ... + 6046670304073.

It is an arithmetic number, because the mean of its divisors is an integer number (133026746688682).

Almost surely, 2^{520013646146623} is an apocalyptic number.

520013646146623 is a deficient number, since it is larger than the sum of its proper divisors (12093340608105).

520013646146623 is a wasteful number, since it uses less digits than its factorization.

520013646146623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12093340608104.

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 520013646146623 in words is "five hundred twenty trillion, thirteen billion, six hundred forty-six million, one hundred forty-six thousand, six hundred twenty-three".