20247462037947 has 4 divisors (see below), whose sum is σ = 26996616050600. Its totient is φ = 13498308025296.

The previous prime is 20247462037903. The next prime is 20247462037963. The reversal of 20247462037947 is 74973026474202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20247462037947 - 2¹⁶ = 20247461972411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20247462037987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374577006322 + ... + 3374577006327.

It is an arithmetic number, because the mean of its divisors is an integer number (6749154012650).

Almost surely, 2^{20247462037947} is an apocalyptic number.

20247462037947 is a deficient number, since it is larger than the sum of its proper divisors (6749154012653).

20247462037947 is an equidigital number, since it uses as much as digits as its factorization.

20247462037947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6749154012652.

The product of its (nonzero) digits is 28449792, while the sum is 57.

The spelling of 20247462037947 in words is "twenty trillion, two hundred forty-seven billion, four hundred sixty-two million, thirty-seven thousand, nine hundred forty-seven".