78312852448 has 24 divisors (see below), whose sum is σ = 156479603112. Its totient is φ = 38572000896.

The previous prime is 78312852407. The next prime is 78312852487. The reversal of 78312852448 is 84425821387.

It is a super-2 number, since 2×78312852448² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78312852395 and 78312852404.

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, 18261115 + ... + 18265402.

It is an arithmetic number, because the mean of its divisors is an integer number (6519983463).

Almost surely, 2^78312852448 is an apocalyptic number.

It is an amenable number.

78312852448 is a deficient number, since it is larger than the sum of its proper divisors (78166750664).

78312852448 is a wasteful number, since it uses less digits than its factorization.

78312852448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36526594 (or 36526586 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 52.

The spelling of 78312852448 in words is "seventy-eight billion, three hundred twelve million, eight hundred fifty-two thousand, four hundred forty-eight".