212315705893 has 8 divisors (see below), whose sum is σ = 212887100376. Its totient is φ = 211744972800.

The previous prime is 212315705879. The next prime is 212315705897. The reversal of 212315705893 is 398507513212.

It can be written as a sum of positive squares in 4 ways, for example, as 10892470689 + 201423235204 = 104367^2 + 448802^2 .

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 212315705893 - 2²⁵ = 212282151461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212315705897) 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, 480933 + ... + 809893.

It is an arithmetic number, because the mean of its divisors is an integer number (26610887547).

Almost surely, 2^212315705893 is an apocalyptic number.

It is an amenable number.

212315705893 is a deficient number, since it is larger than the sum of its proper divisors (571394483).

212315705893 is a wasteful number, since it uses less digits than its factorization.

212315705893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330695.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 212315705893 in words is "two hundred twelve billion, three hundred fifteen million, seven hundred five thousand, eight hundred ninety-three".