21839643094 has 8 divisors (see below), whose sum is σ = 32760097920. Its totient is φ = 10919610456.

The previous prime is 21839643073. The next prime is 21839643103. The reversal of 21839643094 is 49034693812.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121227 + ... + 241609.

It is an arithmetic number, because the mean of its divisors is an integer number (4095012240).

Almost surely, 2^21839643094 is an apocalyptic number.

21839643094 is a deficient number, since it is larger than the sum of its proper divisors (10920454826).

21839643094 is a wasteful number, since it uses less digits than its factorization.

21839643094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211094.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 21839643094 in words is "twenty-one billion, eight hundred thirty-nine million, six hundred forty-three thousand, ninety-four".