212054064397 has 8 divisors (see below), whose sum is σ = 242432948736. Its totient is φ = 181696541712.

The previous prime is 212054064371. The next prime is 212054064403. The reversal of 212054064397 is 793460450212.

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

It is a de Polignac number, because none of the positive numbers 2^k-212054064397 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 (212054064097) 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, 5319133 + ... + 5358850.

It is an arithmetic number, because the mean of its divisors is an integer number (30304118592).

Almost surely, 2^212054064397 is an apocalyptic number.

It is an amenable number.

212054064397 is a deficient number, since it is larger than the sum of its proper divisors (30378884339).

212054064397 is a wasteful number, since it uses less digits than its factorization.

212054064397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680827.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 212054064397 in words is "two hundred twelve billion, fifty-four million, sixty-four thousand, three hundred ninety-seven".