77222943609 has 24 divisors (see below), whose sum is σ = 121804449120. Its totient is φ = 43379469504.

The previous prime is 77222943583. The next prime is 77222943619. The reversal of 77222943609 is 90634922277.

It is not a de Polignac number, because 77222943609 - 2¹² = 77222939513 is a prime.

It is a super-3 number, since 3×77222943609³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (77222943619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4443244 + ... + 4460589.

It is an arithmetic number, because the mean of its divisors is an integer number (5075185380).

Almost surely, 2^77222943609 is an apocalyptic number.

It is an amenable number.

77222943609 is a deficient number, since it is larger than the sum of its proper divisors (44581505511).

77222943609 is a wasteful number, since it uses less digits than its factorization.

77222943609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8903909 (or 8903902 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 51.

The spelling of 77222943609 in words is "seventy-seven billion, two hundred twenty-two million, nine hundred forty-three thousand, six hundred nine".