212743980631545 has 64 divisors (see below), whose sum is σ = 371680013802240. Its totient is φ = 103052778393600.

The previous prime is 212743980631537. The next prime is 212743980631577. The reversal of 212743980631545 is 545136089347212.

It is not a de Polignac number, because 212743980631545 - 2³ = 212743980631537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1050792525 + ... + 1050994965.

It is an arithmetic number, because the mean of its divisors is an integer number (5807500215660).

It is a 2-persistent number, because it is pandigital, and so is 2⋅212743980631545 = 425487961263090, but 3⋅212743980631545 = 638231941894635 is not.

Almost surely, 2^{212743980631545} is an apocalyptic number.

It is an amenable number.

212743980631545 is a deficient number, since it is larger than the sum of its proper divisors (158936033170695).

212743980631545 is a wasteful number, since it uses less digits than its factorization.

212743980631545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208346.

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 212743980631545 in words is "two hundred twelve trillion, seven hundred forty-three billion, nine hundred eighty million, six hundred thirty-one thousand, five hundred forty-five".