78622388822 has 4 divisors (see below), whose sum is σ = 117933583236. Its totient is φ = 39311194410.

The previous prime is 78622388753. The next prime is 78622388837. The reversal of 78622388822 is 22888322687.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19655597204 + ... + 19655597207.

It is an arithmetic number, because the mean of its divisors is an integer number (29483395809).

Almost surely, 2^78622388822 is an apocalyptic number.

78622388822 is a deficient number, since it is larger than the sum of its proper divisors (39311194414).

78622388822 is a wasteful number, since it uses less digits than its factorization.

78622388822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39311194413.

The product of its digits is 8257536, while the sum is 56.

The spelling of 78622388822 in words is "seventy-eight billion, six hundred twenty-two million, three hundred eighty-eight thousand, eight hundred twenty-two".