20972832403 has 2 divisors, whose sum is σ = 20972832404. Its totient is φ = 20972832402.

The previous prime is 20972832337. The next prime is 20972832449. The reversal of 20972832403 is 30423827902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20972832403 - 2¹³ = 20972824211 is a prime.

It is not a weakly prime, because it can be changed into another prime (20972832203) 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 as a sum of consecutive naturals, namely, 10486416201 + 10486416202.

It is an arithmetic number, because the mean of its divisors is an integer number (10486416202).

Almost surely, 2^20972832403 is an apocalyptic number.

20972832403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20972832403 is an equidigital number, since it uses as much as digits as its factorization.

20972832403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 20972832403 in words is "twenty billion, nine hundred seventy-two million, eight hundred thirty-two thousand, four hundred three".