78629577822 has 16 divisors (see below), whose sum is σ = 174732395280. Its totient is φ = 26209859256.

The previous prime is 78629577809. The next prime is 78629577841. The reversal of 78629577822 is 22877592687.

It is a super-2 number, since 2×78629577822² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78629577822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728051593 + ... + 728051700.

It is an arithmetic number, because the mean of its divisors is an integer number (10920774705).

Almost surely, 2^78629577822 is an apocalyptic number.

78629577822 is an abundant number, since it is smaller than the sum of its proper divisors (96102817458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78629577822 is a wasteful number, since it uses less digits than its factorization.

78629577822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456103304 (or 1456103298 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 63.

The spelling of 78629577822 in words is "seventy-eight billion, six hundred twenty-nine million, five hundred seventy-seven thousand, eight hundred twenty-two".