521617104214707 has 4 divisors (see below), whose sum is σ = 695489472286280. Its totient is φ = 347744736143136.

The previous prime is 521617104214697. The next prime is 521617104214709. The reversal of 521617104214707 is 707412401716125.

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

It is not a de Polignac number, because 521617104214707 - 2⁴ = 521617104214691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521617104214709) 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, 86936184035782 + ... + 86936184035787.

It is an arithmetic number, because the mean of its divisors is an integer number (173872368071570).

Almost surely, 2^{521617104214707} is an apocalyptic number.

521617104214707 is a deficient number, since it is larger than the sum of its proper divisors (173872368071573).

521617104214707 is a wasteful number, since it uses less digits than its factorization.

521617104214707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173872368071572.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 521617104214707 in words is "five hundred twenty-one trillion, six hundred seventeen billion, one hundred four million, two hundred fourteen thousand, seven hundred seven".