21340293901 has 8 divisors (see below), whose sum is σ = 21603564000. Its totient is φ = 21078624720.

The previous prime is 21340293899. The next prime is 21340293911. The reversal of 21340293901 is 10939204312.

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

It is not a de Polignac number, because 21340293901 - 2¹ = 21340293899 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 (21340293911) 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, 373395 + ... + 426736.

It is an arithmetic number, because the mean of its divisors is an integer number (2700445500).

Almost surely, 2^21340293901 is an apocalyptic number.

It is an amenable number.

21340293901 is a deficient number, since it is larger than the sum of its proper divisors (263270099).

21340293901 is a wasteful number, since it uses less digits than its factorization.

21340293901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800459.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 21340293901 in words is "twenty-one billion, three hundred forty million, two hundred ninety-three thousand, nine hundred one".