212643090777 has 8 divisors (see below), whose sum is σ = 305333668864. Its totient is φ = 130857286608.

The previous prime is 212643090773. The next prime is 212643090791. The reversal of 212643090777 is 777090346212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212643090777 - 2² = 212643090773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212643090773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2726193433 + ... + 2726193510.

It is an arithmetic number, because the mean of its divisors is an integer number (38166708608).

Almost surely, 2^212643090777 is an apocalyptic number.

It is an amenable number.

212643090777 is a deficient number, since it is larger than the sum of its proper divisors (92690578087).

212643090777 is a wasteful number, since it uses less digits than its factorization.

212643090777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5452386959.

The product of its (nonzero) digits is 889056, while the sum is 48.

The spelling of 212643090777 in words is "two hundred twelve billion, six hundred forty-three million, ninety thousand, seven hundred seventy-seven".