20346753533 has 2 divisors, whose sum is σ = 20346753534. Its totient is φ = 20346753532.

The previous prime is 20346753517. The next prime is 20346753571. The reversal of 20346753533 is 33535764302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10246905529 + 10099848004 = 101227^2 + 100498^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346753533 - 2⁴ = 20346753517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346753593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173376766 + 10173376767.

It is an arithmetic number, because the mean of its divisors is an integer number (10173376767).

Almost surely, 2^20346753533 is an apocalyptic number.

It is an amenable number.

20346753533 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346753533 is an equidigital number, since it uses as much as digits as its factorization.

20346753533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 41.

The spelling of 20346753533 in words is "twenty billion, three hundred forty-six million, seven hundred fifty-three thousand, five hundred thirty-three".