212811654849 has 8 divisors (see below), whose sum is σ = 284216336640. Its totient is φ = 141640704816.

The previous prime is 212811654841. The next prime is 212811654889. The reversal of 212811654849 is 948456118212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212811654849 - 2³ = 212811654841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212811654841) 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, 58430814 + ... + 58434455.

It is an arithmetic number, because the mean of its divisors is an integer number (35527042080).

Almost surely, 2^212811654849 is an apocalyptic number.

It is an amenable number.

212811654849 is a deficient number, since it is larger than the sum of its proper divisors (71404681791).

212811654849 is a wasteful number, since it uses less digits than its factorization.

212811654849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116865879.

The product of its digits is 1105920, while the sum is 51.

The spelling of 212811654849 in words is "two hundred twelve billion, eight hundred eleven million, six hundred fifty-four thousand, eight hundred forty-nine".