20550650999 has 8 divisors (see below), whose sum is σ = 20784340080. Its totient is φ = 20317023936.

The previous prime is 20550650987. The next prime is 20550651007. The reversal of 20550650999 is 99905605502.

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 20550650999 - 2⁴ = 20550650983 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 (20550650929) 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, 1113404 + ... + 1131710.

It is an arithmetic number, because the mean of its divisors is an integer number (2598042510).

Almost surely, 2^20550650999 is an apocalyptic number.

20550650999 is a deficient number, since it is larger than the sum of its proper divisors (233689081).

20550650999 is a wasteful number, since it uses less digits than its factorization.

20550650999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31009.

The product of its (nonzero) digits is 1093500, while the sum is 50.

The spelling of 20550650999 in words is "twenty billion, five hundred fifty million, six hundred fifty thousand, nine hundred ninety-nine".