78340636622 has 8 divisors (see below), whose sum is σ = 117620884200. Its totient is φ = 39133675224.

The previous prime is 78340636601. The next prime is 78340636643. The reversal of 78340636622 is 22663604387.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78340636601) and next prime (78340636643).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78340636622² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18318872 + ... + 18323147.

It is an arithmetic number, because the mean of its divisors is an integer number (14702610525).

Almost surely, 2^78340636622 is an apocalyptic number.

78340636622 is a deficient number, since it is larger than the sum of its proper divisors (39280247578).

78340636622 is a wasteful number, since it uses less digits than its factorization.

78340636622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36643090.

The product of its (nonzero) digits is 1741824, while the sum is 47.

It can be divided in two parts, 783406 and 36622, that added together give a palindrome (820028).

The spelling of 78340636622 in words is "seventy-eight billion, three hundred forty million, six hundred thirty-six thousand, six hundred twenty-two".