77318104412 has 24 divisors (see below), whose sum is σ = 136040268000. Its totient is φ = 38449610496.

The previous prime is 77318104403. The next prime is 77318104429. The reversal of 77318104412 is 21440181377.

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, 2154488 + ... + 2190080.

It is an arithmetic number, because the mean of its divisors is an integer number (5668344500).

Almost surely, 2^77318104412 is an apocalyptic number.

It is an amenable number.

77318104412 is a deficient number, since it is larger than the sum of its proper divisors (58722163588).

77318104412 is a wasteful number, since it uses less digits than its factorization.

77318104412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38525 (or 38523 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

Adding to 77318104412 its reverse (21440181377), we get a palindrome (98758285789).

The spelling of 77318104412 in words is "seventy-seven billion, three hundred eighteen million, one hundred four thousand, four hundred twelve".