33432420021491 has 2 divisors, whose sum is σ = 33432420021492. Its totient is φ = 33432420021490.

The previous prime is 33432420021391. The next prime is 33432420021541. The reversal of 33432420021491 is 19412002423433.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33432420021491 is a prime.

It is a super-2 number, since 2×33432420021491² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33432420021391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16716210010745 + 16716210010746.

It is an arithmetic number, because the mean of its divisors is an integer number (16716210010746).

Almost surely, 2^{33432420021491} is an apocalyptic number.

33432420021491 is a deficient number, since it is larger than the sum of its proper divisors (1).

33432420021491 is an equidigital number, since it uses as much as digits as its factorization.

33432420021491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 33432420021491 in words is "thirty-three trillion, four hundred thirty-two billion, four hundred twenty million, twenty-one thousand, four hundred ninety-one".