78069145161 has 8 divisors (see below), whose sum is σ = 118962506944. Its totient is φ = 44610940080.

The previous prime is 78069145159. The next prime is 78069145243. The reversal of 78069145161 is 16154196087.

It is a happy number.

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

It is not a de Polignac number, because 78069145161 - 2¹ = 78069145159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78069145161.

It is not an unprimeable number, because it can be changed into a prime (78069145361) 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, 1858789150 + ... + 1858789191.

It is an arithmetic number, because the mean of its divisors is an integer number (14870313368).

Almost surely, 2^78069145161 is an apocalyptic number.

It is an amenable number.

78069145161 is a deficient number, since it is larger than the sum of its proper divisors (40893361783).

78069145161 is a wasteful number, since it uses less digits than its factorization.

78069145161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717578351.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 78069145161 in words is "seventy-eight billion, sixty-nine million, one hundred forty-five thousand, one hundred sixty-one".