20326732947 has 16 divisors (see below), whose sum is σ = 30225636000. Its totient is φ = 13500774432.

The previous prime is 20326732903. The next prime is 20326732949. The reversal of 20326732947 is 74923762302.

20326732947 is a `hidden beast` number, since 20 + 3 + 267 + 329 + 47 = 666.

It is not a de Polignac number, because 20326732947 - 2¹⁶ = 20326667411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20326732949) 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 15 ways as a sum of consecutive naturals, for example, 1392072 + ... + 1406597.

It is an arithmetic number, because the mean of its divisors is an integer number (1889102250).

Almost surely, 2^20326732947 is an apocalyptic number.

20326732947 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20326732947 is a deficient number, since it is larger than the sum of its proper divisors (9898903053).

20326732947 is a wasteful number, since it uses less digits than its factorization.

20326732947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798947 (or 2798941 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The spelling of 20326732947 in words is "twenty billion, three hundred twenty-six million, seven hundred thirty-two thousand, nine hundred forty-seven".