521476520672073 has 16 divisors (see below), whose sum is σ = 696436040678976. Its totient is φ = 347084428954560.

The previous prime is 521476520672053. The next prime is 521476520672257. The reversal of 521476520672073 is 370276025674125.

It is not a de Polignac number, because 521476520672073 - 2²⁸ = 521476252236617 is a prime.

It is a super-2 number, since 2×521476520672073² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521476520672053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47768886 + ... + 57661247.

It is an arithmetic number, because the mean of its divisors is an integer number (43527252542436).

Almost surely, 2^{521476520672073} is an apocalyptic number.

It is an amenable number.

521476520672073 is a deficient number, since it is larger than the sum of its proper divisors (174959520006903).

521476520672073 is a wasteful number, since it uses less digits than its factorization.

521476520672073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105432824.

The product of its (nonzero) digits is 29635200, while the sum is 57.

The spelling of 521476520672073 in words is "five hundred twenty-one trillion, four hundred seventy-six billion, five hundred twenty million, six hundred seventy-two thousand, seventy-three".