78180758133861 has 8 divisors (see below), whose sum is σ = 104246944150720. Its totient is φ = 52117538769792.

The previous prime is 78180758133847. The next prime is 78180758133887. The reversal of 78180758133861 is 16833185708187.

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

It is not a de Polignac number, because 78180758133861 - 2³⁰ = 78179684392037 is a prime.

It is a super-2 number, since 2×78180758133861² (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 = 78180758133792 and 78180758133801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78180758133811) 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, 741601705 + ... + 741707118.

It is an arithmetic number, because the mean of its divisors is an integer number (13030868018840).

Almost surely, 2^{78180758133861} is an apocalyptic number.

It is an amenable number.

78180758133861 is a deficient number, since it is larger than the sum of its proper divisors (26066186016859).

78180758133861 is a wasteful number, since it uses less digits than its factorization.

78180758133861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483326395.

The product of its (nonzero) digits is 54190080, while the sum is 66.

The spelling of 78180758133861 in words is "seventy-eight trillion, one hundred eighty billion, seven hundred fifty-eight million, one hundred thirty-three thousand, eight hundred sixty-one".