415479468521 has 4 divisors (see below), whose sum is σ = 447439427652. Its totient is φ = 383519509392.

The previous prime is 415479468479. The next prime is 415479468527. The reversal of 415479468521 is 125864974514.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125864974514 = 2 ⋅62932487257.

It can be written as a sum of positive squares in 2 ways, for example, as 52516597225 + 362962871296 = 229165^2 + 602464^2 .

It is a cyclic number.

It is not a de Polignac number, because 415479468521 - 2¹⁰ = 415479467497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (415479468527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15979979546 + ... + 15979979571.

It is an arithmetic number, because the mean of its divisors is an integer number (111859856913).

Almost surely, 2^415479468521 is an apocalyptic number.

It is an amenable number.

415479468521 is a deficient number, since it is larger than the sum of its proper divisors (31959959131).

415479468521 is a wasteful number, since it uses less digits than its factorization.

415479468521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31959959130.

The product of its digits is 9676800, while the sum is 56.

The spelling of 415479468521 in words is "four hundred fifteen billion, four hundred seventy-nine million, four hundred sixty-eight thousand, five hundred twenty-one".