20033217407 has 4 divisors (see below), whose sum is σ = 22895105616. Its totient is φ = 17171329200.

The previous prime is 20033217377. The next prime is 20033217439. The reversal of 20033217407 is 70471233002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20033217407 - 2⁶ = 20033217343 is a prime.

It is a super-2 number, since 2×20033217407² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20033217407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033237407) 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, 1430944094 + ... + 1430944107.

It is an arithmetic number, because the mean of its divisors is an integer number (5723776404).

Almost surely, 2^20033217407 is an apocalyptic number.

20033217407 is a deficient number, since it is larger than the sum of its proper divisors (2861888209).

20033217407 is an equidigital number, since it uses as much as digits as its factorization.

20033217407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861888208.

The product of its (nonzero) digits is 7056, while the sum is 29.

The spelling of 20033217407 in words is "twenty billion, thirty-three million, two hundred seventeen thousand, four hundred seven".