33420699647 has 4 divisors (see below), whose sum is σ = 33421111416. Its totient is φ = 33420287880.

The previous prime is 33420699623. The next prime is 33420699707. The reversal of 33420699647 is 74699602433.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 33420699647 - 2²⁰ = 33419651071 is a prime.

It is a super-2 number, since 2×33420699647² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33420689647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39104 + ... + 261477.

It is an arithmetic number, because the mean of its divisors is an integer number (8355277854).

Almost surely, 2^33420699647 is an apocalyptic number.

33420699647 is a deficient number, since it is larger than the sum of its proper divisors (411769).

33420699647 is a wasteful number, since it uses less digits than its factorization.

33420699647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411768.

The product of its (nonzero) digits is 5878656, while the sum is 53.

The spelling of 33420699647 in words is "thirty-three billion, four hundred twenty million, six hundred ninety-nine thousand, six hundred forty-seven".