213966665690472 has 48 divisors (see below), whose sum is σ = 581380652492640. Its totient is φ = 71089901948448.

The previous prime is 213966665690447. The next prime is 213966665690567. The reversal of 213966665690472 is 274096566669312.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 213966665690472.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4839976668 + ... + 4840020875.

It is an arithmetic number, because the mean of its divisors is an integer number (12112096926930).

Almost surely, 2^{213966665690472} is an apocalyptic number.

It is an amenable number.

213966665690472 is an abundant number, since it is smaller than the sum of its proper divisors (367413986802168).

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

213966665690472 is a wasteful number, since it uses less digits than its factorization.

213966665690472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9679997862 (or 9679997855 counting only the distinct ones).

The product of its (nonzero) digits is 1058158080, while the sum is 72.

The spelling of 213966665690472 in words is "two hundred thirteen trillion, nine hundred sixty-six billion, six hundred sixty-five million, six hundred ninety thousand, four hundred seventy-two".