77355122412 has 48 divisors (see below), whose sum is σ = 181500691680. Its totient is φ = 25641541632.

The previous prime is 77355122363. The next prime is 77355122413. The reversal of 77355122412 is 21422155377.

It is not an unprimeable number, because it can be changed into a prime (77355122413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5640748 + ... + 5654444.

It is an arithmetic number, because the mean of its divisors is an integer number (3781264410).

Almost surely, 2^77355122412 is an apocalyptic number.

It is an amenable number.

77355122412 is an abundant number, since it is smaller than the sum of its proper divisors (104145569268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77355122412 is a wasteful number, since it uses less digits than its factorization.

77355122412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16290 (or 16288 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

Adding to 77355122412 its reverse (21422155377), we get a palindrome (98777277789).

The spelling of 77355122412 in words is "seventy-seven billion, three hundred fifty-five million, one hundred twenty-two thousand, four hundred twelve".