78373542227 has 4 divisors (see below), whose sum is σ = 78374486040. Its totient is φ = 78372598416.

The previous prime is 78373542167. The next prime is 78373542253. The reversal of 78373542227 is 72224537387.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78373542227 - 2²² = 78369347923 is a prime.

It is a super-2 number, since 2×78373542227² (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 (78373542287) 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, 333893 + ... + 517910.

It is an arithmetic number, because the mean of its divisors is an integer number (19593621510).

Almost surely, 2^78373542227 is an apocalyptic number.

78373542227 is a deficient number, since it is larger than the sum of its proper divisors (943813).

78373542227 is an equidigital number, since it uses as much as digits as its factorization.

78373542227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943812.

The product of its digits is 3951360, while the sum is 50.

The spelling of 78373542227 in words is "seventy-eight billion, three hundred seventy-three million, five hundred forty-two thousand, two hundred twenty-seven".