78181114333157 has 16 divisors (see below), whose sum is σ = 90403723382400. Its totient is φ = 66820143075840.

The previous prime is 78181114333117. The next prime is 78181114333177. The reversal of 78181114333157 is 75133341118187.

It is not a de Polignac number, because 78181114333157 - 2³⁰ = 78180040591333 is a prime.

It is a super-2 number, since 2×78181114333157² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78181114333099 and 78181114333108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78181114333117) 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, 227293232 + ... + 227636937.

It is an arithmetic number, because the mean of its divisors is an integer number (5650232711400).

Almost surely, 2^{78181114333157} is an apocalyptic number.

It is an amenable number.

78181114333157 is a deficient number, since it is larger than the sum of its proper divisors (12222609049243).

78181114333157 is a wasteful number, since it uses less digits than its factorization.

78181114333157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454931116.

The product of its digits is 1693440, while the sum is 53.

The spelling of 78181114333157 in words is "seventy-eight trillion, one hundred eighty-one billion, one hundred fourteen million, three hundred thirty-three thousand, one hundred fifty-seven".