20472617063 has 4 divisors (see below), whose sum is σ = 20492908080. Its totient is φ = 20452326048.

The previous prime is 20472617051. The next prime is 20472617089. The reversal of 20472617063 is 36071627402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36071627402 = 2 ⋅18035813701.

It is a cyclic number.

It is not a de Polignac number, because 20472617063 - 2⁶ = 20472616999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472617023) 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, 10143995 + ... + 10146012.

It is an arithmetic number, because the mean of its divisors is an integer number (5123227020).

Almost surely, 2^20472617063 is an apocalyptic number.

20472617063 is a deficient number, since it is larger than the sum of its proper divisors (20291017).

20472617063 is a wasteful number, since it uses less digits than its factorization.

20472617063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20291016.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 20472617063 in words is "twenty billion, four hundred seventy-two million, six hundred seventeen thousand, sixty-three".