20473732999 has 2 divisors, whose sum is σ = 20473733000. Its totient is φ = 20473732998.

The previous prime is 20473732973. The next prime is 20473733003. The reversal of 20473732999 is 99923737402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20473732999 - 2¹³ = 20473724807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20473732919) 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 as a sum of consecutive naturals, namely, 10236866499 + 10236866500.

It is an arithmetic number, because the mean of its divisors is an integer number (10236866500).

Almost surely, 2^20473732999 is an apocalyptic number.

20473732999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20473732999 is an equidigital number, since it uses as much as digits as its factorization.

20473732999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5143824, while the sum is 55.

The spelling of 20473732999 in words is "twenty billion, four hundred seventy-three million, seven hundred thirty-two thousand, nine hundred ninety-nine".