212804970345 has 96 divisors (see below), whose sum is σ = 431239521024. Its totient is φ = 96024614400.

The previous prime is 212804970341. The next prime is 212804970397. The reversal of 212804970345 is 543079408212.

212804970345 is a `hidden beast` number, since 2 + 128 + 0 + 497 + 0 + 34 + 5 = 666.

It is not a de Polignac number, because 212804970345 - 2² = 212804970341 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 212804970345.

It is not an unprimeable number, because it can be changed into a prime (212804970341) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 168655 + ... + 673835.

It is an arithmetic number, because the mean of its divisors is an integer number (4492078344).

Almost surely, 2^212804970345 is an apocalyptic number.

It is an amenable number.

212804970345 is an abundant number, since it is smaller than the sum of its proper divisors (218434550679).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212804970345 is a wasteful number, since it uses less digits than its factorization.

212804970345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505263 (or 505260 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 212804970345 in words is "two hundred twelve billion, eight hundred four million, nine hundred seventy thousand, three hundred forty-five".