78379066273 has 4 divisors (see below), whose sum is σ = 78977379888. Its totient is φ = 77780752660.

The previous prime is 78379066261. The next prime is 78379066289. The reversal of 78379066273 is 37266097387.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37266097387 = 97 ⋅384186571.

It is a cyclic number.

It is not a de Polignac number, because 78379066273 - 2⁹ = 78379065761 is a prime.

It is a super-2 number, since 2×78379066273² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78379066573) 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, 299156611 + ... + 299156872.

It is an arithmetic number, because the mean of its divisors is an integer number (19744344972).

Almost surely, 2^78379066273 is an apocalyptic number.

It is an amenable number.

78379066273 is a deficient number, since it is larger than the sum of its proper divisors (598313615).

78379066273 is a wasteful number, since it uses less digits than its factorization.

78379066273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598313614.

The product of its (nonzero) digits is 16003008, while the sum is 58.

The spelling of 78379066273 in words is "seventy-eight billion, three hundred seventy-nine million, sixty-six thousand, two hundred seventy-three".