77885706214228 has 12 divisors (see below), whose sum is σ = 148690893681792. Its totient is φ = 35402593733720.

The previous prime is 77885706214213. The next prime is 77885706214241. The reversal of 77885706214228 is 82241260758877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885064843300 + ... + 885064843387.

It is an arithmetic number, because the mean of its divisors is an integer number (12390907806816).

Almost surely, 2^{77885706214228} is an apocalyptic number.

It is an amenable number.

77885706214228 is a deficient number, since it is larger than the sum of its proper divisors (70805187467564).

77885706214228 is a wasteful number, since it uses less digits than its factorization.

77885706214228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770129686702 (or 1770129686700 counting only the distinct ones).

The product of its (nonzero) digits is 168591360, while the sum is 67.

The spelling of 77885706214228 in words is "seventy-seven trillion, eight hundred eighty-five billion, seven hundred six million, two hundred fourteen thousand, two hundred twenty-eight".