32821813919 has 2 divisors, whose sum is σ = 32821813920. Its totient is φ = 32821813918.

The previous prime is 32821813909. The next prime is 32821813933. The reversal of 32821813919 is 91931812823.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32821813919 - 2²⁴ = 32805036703 is a prime.

It is a super-2 number, since 2×32821813919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32821813909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16410906959 + 16410906960.

It is an arithmetic number, because the mean of its divisors is an integer number (16410906960).

Almost surely, 2^32821813919 is an apocalyptic number.

32821813919 is a deficient number, since it is larger than the sum of its proper divisors (1).

32821813919 is an equidigital number, since it uses as much as digits as its factorization.

32821813919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 47.

The spelling of 32821813919 in words is "thirty-two billion, eight hundred twenty-one million, eight hundred thirteen thousand, nine hundred nineteen".