20472063739 has 2 divisors, whose sum is σ = 20472063740. Its totient is φ = 20472063738.

The previous prime is 20472063701. The next prime is 20472063761. The reversal of 20472063739 is 93736027402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20472063739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20472063695 and 20472063704.

It is not a weakly prime, because it can be changed into another prime (20472067739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10236031869 + 10236031870.

It is an arithmetic number, because the mean of its divisors is an integer number (10236031870).

Almost surely, 2^20472063739 is an apocalyptic number.

20472063739 is a deficient number, since it is larger than the sum of its proper divisors (1).

20472063739 is an equidigital number, since it uses as much as digits as its factorization.

20472063739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 20472063739 in words is "twenty billion, four hundred seventy-two million, sixty-three thousand, seven hundred thirty-nine".