78506632853607 has 32 divisors (see below), whose sum is σ = 121074109728768. Its totient is φ = 44319107470176.

The previous prime is 78506632853591. The next prime is 78506632853617. The reversal of 78506632853607 is 70635823660587.

It is not a de Polignac number, because 78506632853607 - 2⁴ = 78506632853591 is a prime.

It is a super-2 number, since 2×78506632853607² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78506632853617) 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, 58816408 + ... + 60136370.

It is an arithmetic number, because the mean of its divisors is an integer number (3783565929024).

Almost surely, 2^{78506632853607} is an apocalyptic number.

78506632853607 is a deficient number, since it is larger than the sum of its proper divisors (42567476875161).

78506632853607 is a wasteful number, since it uses less digits than its factorization.

78506632853607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354179.

The product of its (nonzero) digits is 304819200, while the sum is 66.

The spelling of 78506632853607 in words is "seventy-eight trillion, five hundred six billion, six hundred thirty-two million, eight hundred fifty-three thousand, six hundred seven".