212971608977 has 8 divisors (see below), whose sum is σ = 216275133696. Its totient is φ = 209671756272.

The previous prime is 212971608961. The next prime is 212971608989. The reversal of 212971608977 is 779806179212.

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

It is a cyclic number.

It is not a de Polignac number, because 212971608977 - 2⁴ = 212971608961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212971607977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800993 + ... + 1033214.

It is an arithmetic number, because the mean of its divisors is an integer number (27034391712).

Almost surely, 2^212971608977 is an apocalyptic number.

It is an amenable number.

212971608977 is a deficient number, since it is larger than the sum of its proper divisors (3303524719).

212971608977 is a wasteful number, since it uses less digits than its factorization.

212971608977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836007.

The product of its (nonzero) digits is 5334336, while the sum is 59.

The spelling of 212971608977 in words is "two hundred twelve billion, nine hundred seventy-one million, six hundred eight thousand, nine hundred seventy-seven".