78345055181 has 8 divisors (see below), whose sum is σ = 81822292800. Its totient is φ = 74873728512.

The previous prime is 78345055177. The next prime is 78345055193. The reversal of 78345055181 is 18155054387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78345055181 - 2² = 78345055177 is a prime.

It is a super-2 number, since 2×78345055181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78345055171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450631 + ... + 1503668.

It is an arithmetic number, because the mean of its divisors is an integer number (10227786600).

Almost surely, 2^78345055181 is an apocalyptic number.

It is an amenable number.

78345055181 is a deficient number, since it is larger than the sum of its proper divisors (3477237619).

78345055181 is a wasteful number, since it uses less digits than its factorization.

78345055181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955475.

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 78345055181 in words is "seventy-eight billion, three hundred forty-five million, fifty-five thousand, one hundred eighty-one".