212978970963 has 24 divisors (see below), whose sum is σ = 347175756720. Its totient is φ = 124627191360.

The previous prime is 212978970959. The next prime is 212978970979. The reversal of 212978970963 is 369079879212.

It is not a de Polignac number, because 212978970963 - 2² = 212978970959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212978970963.

It is not an unprimeable number, because it can be changed into a prime (212978970923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37088556 + ... + 37094297.

It is an arithmetic number, because the mean of its divisors is an integer number (14465656530).

Almost surely, 2^212978970963 is an apocalyptic number.

212978970963 is a deficient number, since it is larger than the sum of its proper divisors (134196785757).

212978970963 is a wasteful number, since it uses less digits than its factorization.

212978970963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74182899 (or 74182896 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The spelling of 212978970963 in words is "two hundred twelve billion, nine hundred seventy-eight million, nine hundred seventy thousand, nine hundred sixty-three".