20475745337 has 2 divisors, whose sum is σ = 20475745338. Its totient is φ = 20475745336.

The previous prime is 20475745321. The next prime is 20475745363. The reversal of 20475745337 is 73354757402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20148099136 + 327646201 = 141944^2 + 18101^2 .

It is a cyclic number.

It is not a de Polignac number, because 20475745337 - 2⁴ = 20475745321 is a prime.

It is a super-2 number, since 2×20475745337² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20475745291 and 20475745300.

It is not a weakly prime, because it can be changed into another prime (20475744337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10237872668 + 10237872669.

It is an arithmetic number, because the mean of its divisors is an integer number (10237872669).

Almost surely, 2^20475745337 is an apocalyptic number.

It is an amenable number.

20475745337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20475745337 is an equidigital number, since it uses as much as digits as its factorization.

20475745337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469600, while the sum is 47.

The spelling of 20475745337 in words is "twenty billion, four hundred seventy-five million, seven hundred forty-five thousand, three hundred thirty-seven".