21801843103937 has 8 divisors (see below), whose sum is σ = 24714639956160. Its totient is φ = 19065579394320.

The previous prime is 21801843103897. The next prime is 21801843103951. The reversal of 21801843103937 is 73930134810812.

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

It is a cyclic number.

It is not a de Polignac number, because 21801843103937 - 2⁸ = 21801843103681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21801843105937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44133285389 + ... + 44133285882.

It is an arithmetic number, because the mean of its divisors is an integer number (3089329994520).

Almost surely, 2^{21801843103937} is an apocalyptic number.

It is an amenable number.

21801843103937 is a deficient number, since it is larger than the sum of its proper divisors (2912796852223).

21801843103937 is a wasteful number, since it uses less digits than its factorization.

21801843103937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88266571303.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 21801843103937 in words is "twenty-one trillion, eight hundred one billion, eight hundred forty-three million, one hundred three thousand, nine hundred thirty-seven".