77436324412 has 48 divisors (see below), whose sum is σ = 139595339520. Its totient is φ = 37571922432.

The previous prime is 77436324409. The next prime is 77436324443. The reversal of 77436324412 is 21442363477.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7980748 + ... + 7990444.

It is an arithmetic number, because the mean of its divisors is an integer number (2908236240).

Almost surely, 2^77436324412 is an apocalyptic number.

It is an amenable number.

77436324412 is a deficient number, since it is larger than the sum of its proper divisors (62159015108).

77436324412 is a wasteful number, since it uses less digits than its factorization.

77436324412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210 (or 10208 counting only the distinct ones).

The product of its digits is 677376, while the sum is 43.

Adding to 77436324412 its reverse (21442363477), we get a palindrome (98878687889).

The spelling of 77436324412 in words is "seventy-seven billion, four hundred thirty-six million, three hundred twenty-four thousand, four hundred twelve".