77786152344212 has 96 divisors (see below), whose sum is σ = 148719338342400. Its totient is φ = 35383721069952.

The previous prime is 77786152344209. The next prime is 77786152344217. The reversal of 77786152344212 is 21244325168777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77786152344217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3121547489 + ... + 3121572407.

It is an arithmetic number, because the mean of its divisors is an integer number (1549159774400).

Almost surely, 2^{77786152344212} is an apocalyptic number.

It is an amenable number.

77786152344212 is a deficient number, since it is larger than the sum of its proper divisors (70933185998188).

77786152344212 is a wasteful number, since it uses less digits than its factorization.

77786152344212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26725 (or 26723 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 59.

The spelling of 77786152344212 in words is "seventy-seven trillion, seven hundred eighty-six billion, one hundred fifty-two million, three hundred forty-four thousand, two hundred twelve".