768726222447 has 4 divisors (see below), whose sum is σ = 1024968296600. Its totient is φ = 512484148296.

The previous prime is 768726222443. The next prime is 768726222461. The reversal of 768726222447 is 744222627867.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 768726222447 - 2² = 768726222443 is a prime.

It is a super-3 number, since 3×768726222447³ (a number of 37 digits) contains 333 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 (768726222443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128121037072 + ... + 128121037077.

It is an arithmetic number, because the mean of its divisors is an integer number (256242074150).

Almost surely, 2^768726222447 is an apocalyptic number.

768726222447 is a deficient number, since it is larger than the sum of its proper divisors (256242074153).

768726222447 is a wasteful number, since it uses less digits than its factorization.

768726222447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256242074152.

The product of its digits is 25288704, while the sum is 57.

The spelling of 768726222447 in words is "seven hundred sixty-eight billion, seven hundred twenty-six million, two hundred twenty-two thousand, four hundred forty-seven".