78094938073 has 4 divisors (see below), whose sum is σ = 78143116708. Its totient is φ = 78046759440.

The previous prime is 78094938029. The next prime is 78094938101. The reversal of 78094938073 is 37083949087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37083949087 = 144583 ⋅256489.

It can be written as a sum of positive squares in 2 ways, for example, as 28700764569 + 49394173504 = 169413^2 + 222248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78094938073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78094937999 and 78094938017.

It is not an unprimeable number, because it can be changed into a prime (78094938023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24086886 + ... + 24090127.

It is an arithmetic number, because the mean of its divisors is an integer number (19535779177).

Almost surely, 2^78094938073 is an apocalyptic number.

It is an amenable number.

78094938073 is a deficient number, since it is larger than the sum of its proper divisors (48178635).

78094938073 is a wasteful number, since it uses less digits than its factorization.

78094938073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48178634.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 78094938073 in words is "seventy-eight billion, ninety-four million, nine hundred thirty-eight thousand, seventy-three".