21433143394 has 16 divisors (see below), whose sum is σ = 34696928448. Its totient is φ = 9871031952.

The previous prime is 21433143373. The next prime is 21433143451. The reversal of 21433143394 is 49334133412.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 870462 + ... + 894745.

It is an arithmetic number, because the mean of its divisors is an integer number (2168558028).

Almost surely, 2^21433143394 is an apocalyptic number.

21433143394 is a deficient number, since it is larger than the sum of its proper divisors (13263785054).

21433143394 is a wasteful number, since it uses less digits than its factorization.

21433143394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765689.

The product of its digits is 93312, while the sum is 37.

The spelling of 21433143394 in words is "twenty-one billion, four hundred thirty-three million, one hundred forty-three thousand, three hundred ninety-four".