66413402486715 has 32 divisors (see below), whose sum is σ = 107303027060736. Its totient is φ = 35073350547840.

The previous prime is 66413402486713. The next prime is 66413402486731. The reversal of 66413402486715 is 51768420431466.

It is not a de Polignac number, because 66413402486715 - 2¹ = 66413402486713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66413402486713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14777145 + ... + 18740085.

It is an arithmetic number, because the mean of its divisors is an integer number (3353219595648).

Almost surely, 2^{66413402486715} is an apocalyptic number.

66413402486715 is a deficient number, since it is larger than the sum of its proper divisors (40889624574021).

66413402486715 is a wasteful number, since it uses less digits than its factorization.

66413402486715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973899.

The product of its (nonzero) digits is 23224320, while the sum is 57.

The spelling of 66413402486715 in words is "sixty-six trillion, four hundred thirteen billion, four hundred two million, four hundred eighty-six thousand, seven hundred fifteen".