21798429403 has 8 divisors (see below), whose sum is σ = 21897615168. Its totient is φ = 21699292224.

The previous prime is 21798429379. The next prime is 21798429461. The reversal of 21798429403 is 30492489712.

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 21798429403 - 2²¹ = 21796332251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21798429463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126750 + ... + 1145932.

It is an arithmetic number, because the mean of its divisors is an integer number (2737201896).

Almost surely, 2^21798429403 is an apocalyptic number.

21798429403 is a deficient number, since it is larger than the sum of its proper divisors (99185765).

21798429403 is a wasteful number, since it uses less digits than its factorization.

21798429403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24293.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 21798429403 in words is "twenty-one billion, seven hundred ninety-eight million, four hundred twenty-nine thousand, four hundred three".