213775430812726 has 4 divisors (see below), whose sum is σ = 320663146219092. Its totient is φ = 106887715406362.

The previous prime is 213775430812591. The next prime is 213775430812729. The reversal of 213775430812726 is 627218034577312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213775430812729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53443857703180 + ... + 53443857703183.

It is an arithmetic number, because the mean of its divisors is an integer number (80165786554773).

Almost surely, 2^{213775430812726} is an apocalyptic number.

213775430812726 is a deficient number, since it is larger than the sum of its proper divisors (106887715406366).

213775430812726 is a wasteful number, since it uses less digits than its factorization.

213775430812726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106887715406365.

The product of its (nonzero) digits is 23708160, while the sum is 58.

The spelling of 213775430812726 in words is "two hundred thirteen trillion, seven hundred seventy-five billion, four hundred thirty million, eight hundred twelve thousand, seven hundred twenty-six".