521802166674011 has 8 divisors (see below), whose sum is σ = 544656392551584. Its totient is φ = 498961872059200.

The previous prime is 521802166674001. The next prime is 521802166674029. The reversal of 521802166674011 is 110476661208125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521802166674011 is a prime.

It is a super-2 number, since 2×521802166674011² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521802166674001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3482739140 + ... + 3482888961.

It is an arithmetic number, because the mean of its divisors is an integer number (68082049068948).

Almost surely, 2^{521802166674011} is an apocalyptic number.

521802166674011 is a deficient number, since it is larger than the sum of its proper divisors (22854225877573).

521802166674011 is a wasteful number, since it uses less digits than its factorization.

521802166674011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6965631381.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 521802166674011 in words is "five hundred twenty-one trillion, eight hundred two billion, one hundred sixty-six million, six hundred seventy-four thousand, eleven".