78199226752 has 32 divisors (see below), whose sum is σ = 155826956520. Its totient is φ = 39089716224.

The previous prime is 78199226741. The next prime is 78199226753. The reversal of 78199226752 is 25762299187.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×78199226752² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78199226753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444003 + ... + 594589.

Almost surely, 2^78199226752 is an apocalyptic number.

It is an amenable number.

78199226752 is a deficient number, since it is larger than the sum of its proper divisors (77627729768).

78199226752 is a wasteful number, since it uses less digits than its factorization.

78199226752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154658 (or 154646 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 58.

The spelling of 78199226752 in words is "seventy-eight billion, one hundred ninety-nine million, two hundred twenty-six thousand, seven hundred fifty-two".