78268226533 has 8 divisors (see below), whose sum is σ = 93338506368. Its totient is φ = 64170222864.

The previous prime is 78268226461. The next prime is 78268226609. The reversal of 78268226533 is 33562286287.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78268226533 is a prime.

It is a super-2 number, since 2×78268226533² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78268226633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243068866 + ... + 243069187.

It is an arithmetic number, because the mean of its divisors is an integer number (11667313296).

Almost surely, 2^78268226533 is an apocalyptic number.

It is an amenable number.

78268226533 is a deficient number, since it is larger than the sum of its proper divisors (15070279835).

78268226533 is a wasteful number, since it uses less digits than its factorization.

78268226533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486138083.

The product of its digits is 5806080, while the sum is 52.

The spelling of 78268226533 in words is "seventy-eight billion, two hundred sixty-eight million, two hundred twenty-six thousand, five hundred thirty-three".