21492341043 has 8 divisors (see below), whose sum is σ = 28658110608. Its totient is φ = 14327399424.

The previous prime is 21492341033. The next prime is 21492341153. The reversal of 21492341043 is 34014329412.

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

It is not a de Polignac number, because 21492341043 - 2³⁰ = 20418599219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21492340995 and 21492341013.

It is not an unprimeable number, because it can be changed into a prime (21492341033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143646 + ... + 252227.

It is an arithmetic number, because the mean of its divisors is an integer number (3582263826).

Almost surely, 2^21492341043 is an apocalyptic number.

21492341043 is a deficient number, since it is larger than the sum of its proper divisors (7165769565).

21492341043 is a wasteful number, since it uses less digits than its factorization.

21492341043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413973.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 21492341043 in words is "twenty-one billion, four hundred ninety-two million, three hundred forty-one thousand, forty-three".