20401133999 has 8 divisors (see below), whose sum is σ = 20524358448. Its totient is φ = 20278202560.

The previous prime is 20401133981. The next prime is 20401134031. The reversal of 20401133999 is 99933110402.

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 20401133999 - 2⁸ = 20401133743 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 (20401133969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67229 + ... + 212889.

It is an arithmetic number, because the mean of its divisors is an integer number (2565544806).

Almost surely, 2^20401133999 is an apocalyptic number.

20401133999 is a deficient number, since it is larger than the sum of its proper divisors (123224449).

20401133999 is a wasteful number, since it uses less digits than its factorization.

20401133999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146505.

The product of its (nonzero) digits is 52488, while the sum is 41.

The spelling of 20401133999 in words is "twenty billion, four hundred one million, one hundred thirty-three thousand, nine hundred ninety-nine".