21796437343 has 8 divisors (see below), whose sum is σ = 22444966656. Its totient is φ = 21153475200.

The previous prime is 21796437329. The next prime is 21796437367. The reversal of 21796437343 is 34373469712.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21796437343 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 (21796407343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383846 + ... + 1399507.

It is an arithmetic number, because the mean of its divisors is an integer number (2805620832).

Almost surely, 2^21796437343 is an apocalyptic number.

21796437343 is a deficient number, since it is larger than the sum of its proper divisors (648529313).

21796437343 is a wasteful number, since it uses less digits than its factorization.

21796437343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783585.

The product of its digits is 2286144, while the sum is 49.

The spelling of 21796437343 in words is "twenty-one billion, seven hundred ninety-six million, four hundred thirty-seven thousand, three hundred forty-three".