20472711706 has 8 divisors (see below), whose sum is σ = 30709937844. Its totient is φ = 10236065760.

The previous prime is 20472711697. The next prime is 20472711709. The reversal of 20472711706 is 60711727402.

It can be written as a sum of positive squares in 2 ways, for example, as 20159740225 + 312971481 = 141985^2 + 17691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20472711709) 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 in 3 ways as a sum of consecutive naturals, for example, 42265 + ... + 206716.

Almost surely, 2^20472711706 is an apocalyptic number.

20472711706 is a deficient number, since it is larger than the sum of its proper divisors (10237226138).

20472711706 is a wasteful number, since it uses less digits than its factorization.

20472711706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290096.

The product of its (nonzero) digits is 32928, while the sum is 37.

The spelling of 20472711706 in words is "twenty billion, four hundred seventy-two million, seven hundred eleven thousand, seven hundred six".