78008797290 has 16 divisors (see below), whose sum is σ = 187221113568. Its totient is φ = 20802345936.

The previous prime is 78008797289. The next prime is 78008797309. The reversal of 78008797290 is 9279780087.

It is a super-2 number, since 2×78008797290² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78008797290.

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, 1300146592 + ... + 1300146651.

It is an arithmetic number, because the mean of its divisors is an integer number (11701319598).

Almost surely, 2^78008797290 is an apocalyptic number.

78008797290 is an abundant number, since it is smaller than the sum of its proper divisors (109212316278).

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

78008797290 is a wasteful number, since it uses less digits than its factorization.

78008797290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600293253.

The product of its (nonzero) digits is 3556224, while the sum is 57.

The spelling of 78008797290 in words is "seventy-eight billion, eight million, seven hundred ninety-seven thousand, two hundred ninety".