213056543501 has 8 divisors (see below), whose sum is σ = 231091459704. Its totient is φ = 195632980480.

The previous prime is 213056543459. The next prime is 213056543551. The reversal of 213056543501 is 105345650312.

213056543501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3178027876 + 209878515625 = 56374^2 + 458125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213056543501 - 2⁶ = 213056543437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213056543551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152837570 + ... + 152838963.

It is an arithmetic number, because the mean of its divisors is an integer number (28886432463).

Almost surely, 2^213056543501 is an apocalyptic number.

It is an amenable number.

213056543501 is a deficient number, since it is larger than the sum of its proper divisors (18034916203).

213056543501 is a wasteful number, since it uses less digits than its factorization.

213056543501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305676591.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 213056543501 in words is "two hundred thirteen billion, fifty-six million, five hundred forty-three thousand, five hundred one".