212906074455 has 48 divisors (see below), whose sum is σ = 388095611904. Its totient is φ = 111950566560.

The previous prime is 212906074439. The next prime is 212906074483. The reversal of 212906074455 is 554470609212.

212906074455 is a `hidden beast` number, since 2 + 129 + 0 + 6 + 0 + 74 + 455 = 666.

It is not a de Polignac number, because 212906074455 - 2⁴ = 212906074439 is a prime.

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 212906074455.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1147759 + ... + 1320288.

It is an arithmetic number, because the mean of its divisors is an integer number (8085325248).

Almost surely, 2^212906074455 is an apocalyptic number.

212906074455 is a deficient number, since it is larger than the sum of its proper divisors (175189537449).

212906074455 is an equidigital number, since it uses as much as digits as its factorization.

212906074455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468138 (or 2468126 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 212906074455 in words is "two hundred twelve billion, nine hundred six million, seventy-four thousand, four hundred fifty-five".