78468211526873 has 12 divisors (see below), whose sum is σ = 91280067016500. Its totient is φ = 67257937297152.

The previous prime is 78468211526857. The next prime is 78468211526879. The reversal of 78468211526873 is 37862511286487.

It can be written as a sum of positive squares in 2 ways, for example, as 21295982169049 + 57172229357824 = 4614757^2 + 7561232^2 .

It is not a de Polignac number, because 78468211526873 - 2⁴ = 78468211526857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78468211526879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43253 + ... + 12527501.

It is an arithmetic number, because the mean of its divisors is an integer number (7606672251375).

Almost surely, 2^{78468211526873} is an apocalyptic number.

It is an amenable number.

78468211526873 is a deficient number, since it is larger than the sum of its proper divisors (12811855489627).

78468211526873 is a wasteful number, since it uses less digits than its factorization.

78468211526873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612536 (or 12612529 counting only the distinct ones).

The product of its digits is 216760320, while the sum is 68.

The spelling of 78468211526873 in words is "seventy-eight trillion, four hundred sixty-eight billion, two hundred eleven million, five hundred twenty-six thousand, eight hundred seventy-three".