212664930777 has 12 divisors (see below), whose sum is σ = 330812114724. Its totient is φ = 130870726560.

The previous prime is 212664930773. The next prime is 212664930817. The reversal of 212664930777 is 777039466212.

212664930777 is a `hidden beast` number, since 2 + 1 + 266 + 4 + 9 + 307 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19433475216 + 193231455561 = 139404^2 + 439581^2 .

It is not a de Polignac number, because 212664930777 - 2² = 212664930773 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212664930773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 908824374 + ... + 908824607.

It is an arithmetic number, because the mean of its divisors is an integer number (27567676227).

Almost surely, 2^212664930777 is an apocalyptic number.

It is an amenable number.

212664930777 is a deficient number, since it is larger than the sum of its proper divisors (118147183947).

212664930777 is a wasteful number, since it uses less digits than its factorization.

212664930777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817649000 (or 1817648997 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 212664930777 in words is "two hundred twelve billion, six hundred sixty-four million, nine hundred thirty thousand, seven hundred seventy-seven".