212013195893 has 4 divisors (see below), whose sum is σ = 212168291040. Its totient is φ = 211858100748.

The previous prime is 212013195847. The next prime is 212013195917. The reversal of 212013195893 is 398591310212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212013195893 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 (212013165893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77545523 + ... + 77548256.

It is an arithmetic number, because the mean of its divisors is an integer number (53042072760).

Almost surely, 2^212013195893 is an apocalyptic number.

It is an amenable number.

212013195893 is a deficient number, since it is larger than the sum of its proper divisors (155095147).

212013195893 is a wasteful number, since it uses less digits than its factorization.

212013195893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155095146.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 212013195893 in words is "two hundred twelve billion, thirteen million, one hundred ninety-five thousand, eight hundred ninety-three".