212968070646 has 32 divisors (see below), whose sum is σ = 441871947360. Its totient is φ = 68347259904.

The previous prime is 212968070633. The next prime is 212968070681. The reversal of 212968070646 is 646070869212.

It is a super-2 number, since 2×212968070646² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1672225 + ... + 1795068.

It is an arithmetic number, because the mean of its divisors is an integer number (13808498355).

Almost surely, 2^212968070646 is an apocalyptic number.

212968070646 is an abundant number, since it is smaller than the sum of its proper divisors (228903876714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212968070646 is a wasteful number, since it uses less digits than its factorization.

212968070646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467680.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 212968070646 in words is "two hundred twelve billion, nine hundred sixty-eight million, seventy thousand, six hundred forty-six".