33664901973 has 4 divisors (see below), whose sum is σ = 44886535968. Its totient is φ = 22443267980.

The previous prime is 33664901951. The next prime is 33664901987. The reversal of 33664901973 is 37910946633.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33664901973 - 2⁶ = 33664901909 is a prime.

It is a super-2 number, since 2×33664901973² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33664905973) 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, 5610816993 + ... + 5610816998.

It is an arithmetic number, because the mean of its divisors is an integer number (11221633992).

Almost surely, 2^33664901973 is an apocalyptic number.

It is an amenable number.

33664901973 is a deficient number, since it is larger than the sum of its proper divisors (11221633995).

33664901973 is a wasteful number, since it uses less digits than its factorization.

33664901973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11221633994.

The product of its (nonzero) digits is 2204496, while the sum is 51.

The spelling of 33664901973 in words is "thirty-three billion, six hundred sixty-four million, nine hundred one thousand, nine hundred seventy-three".