212859463690 has 16 divisors (see below), whose sum is σ = 384791446728. Its totient is φ = 84778360576.

The previous prime is 212859463679. The next prime is 212859463721. The reversal of 212859463690 is 96364958212.

It can be written as a sum of positive squares in 4 ways, for example, as 72753733441 + 140105730249 = 269729^2 + 374307^2 .

It is a super-2 number, since 2×212859463690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 45675667 + ... + 45680326.

Almost surely, 2^212859463690 is an apocalyptic number.

212859463690 is a deficient number, since it is larger than the sum of its proper divisors (171931983038).

212859463690 is a wasteful number, since it uses less digits than its factorization.

212859463690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91356233.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 212859463690 in words is "two hundred twelve billion, eight hundred fifty-nine million, four hundred sixty-three thousand, six hundred ninety".