213783943959 has 48 divisors (see below), whose sum is σ = 316334753280. Its totient is φ = 139084706880.

The previous prime is 213783943957. The next prime is 213783943969. The reversal of 213783943959 is 959349387312.

It is not a de Polignac number, because 213783943959 - 2¹ = 213783943957 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 213783943896 and 213783943905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213783943951) by changing a digit.

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, 56749894 + ... + 56753660.

It is an arithmetic number, because the mean of its divisors is an integer number (6590307360).

Almost surely, 2^213783943959 is an apocalyptic number.

213783943959 is a deficient number, since it is larger than the sum of its proper divisors (102550809321).

213783943959 is a wasteful number, since it uses less digits than its factorization.

213783943959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620 (or 4617 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The spelling of 213783943959 in words is "two hundred thirteen billion, seven hundred eighty-three million, nine hundred forty-three thousand, nine hundred fifty-nine".