21402310433 has 8 divisors (see below), whose sum is σ = 24490479552. Its totient is φ = 18321815376.

The previous prime is 21402310417. The next prime is 21402310453. The reversal of 21402310433 is 33401320412.

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 21402310433 - 2⁴ = 21402310417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21402310399 and 21402310408.

It is not an unprimeable number, because it can be changed into a prime (21402310453) 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, 1912535 + ... + 1923692.

It is an arithmetic number, because the mean of its divisors is an integer number (3061309944).

Almost surely, 2^21402310433 is an apocalyptic number.

It is an amenable number.

21402310433 is a deficient number, since it is larger than the sum of its proper divisors (3088169119).

21402310433 is an equidigital number, since it uses as much as digits as its factorization.

21402310433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837031.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21402310433 its reverse (33401320412), we get a palindrome (54803630845).

The spelling of 21402310433 in words is "twenty-one billion, four hundred two million, three hundred ten thousand, four hundred thirty-three".