78375747636197 has 16 divisors (see below), whose sum is σ = 87172781266368. Its totient is φ = 69859187998080.

The previous prime is 78375747636181. The next prime is 78375747636259. The reversal of 78375747636197 is 79163674757387.

It is a cyclic number.

It is not a de Polignac number, because 78375747636197 - 2⁴ = 78375747636181 is a prime.

It is a super-2 number, since 2×78375747636197² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78375747636107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44460848 + ... + 46190025.

It is an arithmetic number, because the mean of its divisors is an integer number (5448298829148).

Almost surely, 2^{78375747636197} is an apocalyptic number.

It is an amenable number.

78375747636197 is a deficient number, since it is larger than the sum of its proper divisors (8797033630171).

78375747636197 is a wasteful number, since it uses less digits than its factorization.

78375747636197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90652420.

The product of its digits is 7841473920, while the sum is 80.

The spelling of 78375747636197 in words is "seventy-eight trillion, three hundred seventy-five billion, seven hundred forty-seven million, six hundred thirty-six thousand, one hundred ninety-seven".