21282733694 has 8 divisors (see below), whose sum is σ = 31925513880. Its totient is φ = 10640895736.

The previous prime is 21282733679. The next prime is 21282733709. The reversal of 21282733694 is 49633728212.

It is an interprime number because it is at equal distance from previous prime (21282733679) and next prime (21282733709).

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

It is a Curzon number.

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, 176084 + ... + 271239.

It is an arithmetic number, because the mean of its divisors is an integer number (3990689235).

Almost surely, 2^21282733694 is an apocalyptic number.

21282733694 is a deficient number, since it is larger than the sum of its proper divisors (10642780186).

21282733694 is a wasteful number, since it uses less digits than its factorization.

21282733694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471114.

The product of its digits is 870912, while the sum is 47.

The spelling of 21282733694 in words is "twenty-one billion, two hundred eighty-two million, seven hundred thirty-three thousand, six hundred ninety-four".