78223246718 has 16 divisors (see below), whose sum is σ = 124310395440. Its totient is φ = 36789169536.

The previous prime is 78223246687. The next prime is 78223246723. The reversal of 78223246718 is 81764232287.

It is a super-2 number, since 2×78223246718² (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 7 ways as a sum of consecutive naturals, for example, 621908 + ... + 737031.

It is an arithmetic number, because the mean of its divisors is an integer number (7769399715).

Almost surely, 2^78223246718 is an apocalyptic number.

78223246718 is a deficient number, since it is larger than the sum of its proper divisors (46087148722).

78223246718 is a wasteful number, since it uses less digits than its factorization.

78223246718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360651.

The product of its digits is 1806336, while the sum is 50.

The spelling of 78223246718 in words is "seventy-eight billion, two hundred twenty-three million, two hundred forty-six thousand, seven hundred eighteen".