20673399967 has 8 divisors (see below), whose sum is σ = 23879435472. Its totient is φ = 17688470400.

The previous prime is 20673399941. The next prime is 20673399983. The reversal of 20673399967 is 76999337602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20673399967 - 2⁷ = 20673399839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20673399917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55276284 + ... + 55276657.

It is an arithmetic number, because the mean of its divisors is an integer number (2984929434).

Almost surely, 2^20673399967 is an apocalyptic number.

20673399967 is a deficient number, since it is larger than the sum of its proper divisors (3206035505).

20673399967 is a wasteful number, since it uses less digits than its factorization.

20673399967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110552969.

The product of its (nonzero) digits is 23147208, while the sum is 61.

The spelling of 20673399967 in words is "twenty billion, six hundred seventy-three million, three hundred ninety-nine thousand, nine hundred sixty-seven".