77993040022 has 16 divisors (see below), whose sum is σ = 118131670080. Its totient is φ = 38616441472.

The previous prime is 77993039989. The next prime is 77993040053. The reversal of 77993040022 is 22004039977.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95043 + ... + 406225.

It is an arithmetic number, because the mean of its divisors is an integer number (7383229380).

Almost surely, 2^77993040022 is an apocalyptic number.

77993040022 is a deficient number, since it is larger than the sum of its proper divisors (40138630058).

77993040022 is a wasteful number, since it uses less digits than its factorization.

77993040022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312407.

The product of its (nonzero) digits is 190512, while the sum is 43.

Adding to 77993040022 its reverse (22004039977), we get a palindrome (99997079999).

The spelling of 77993040022 in words is "seventy-seven billion, nine hundred ninety-three million, forty thousand, twenty-two".