21403301193 has 8 divisors (see below), whose sum is σ = 31708594400. Its totient is φ = 14268867444.

The previous prime is 21403301159. The next prime is 21403301207. The reversal of 21403301193 is 39110330412.

21403301193 is a `hidden beast` number, since 2 + 140 + 330 + 1 + 193 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-21403301193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 792714859 = 21403301193 / (2 + 1 + 4 + 0 + 3 + 3 + 0 + 1 + 1 + 9 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21403301993) 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, 396357403 + ... + 396357456.

It is an arithmetic number, because the mean of its divisors is an integer number (3963574300).

Almost surely, 2^21403301193 is an apocalyptic number.

It is an amenable number.

21403301193 is a deficient number, since it is larger than the sum of its proper divisors (10305293207).

21403301193 is an equidigital number, since it uses as much as digits as its factorization.

21403301193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792714868 (or 792714862 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 21403301193 in words is "twenty-one billion, four hundred three million, three hundred one thousand, one hundred ninety-three".