20502373753 has 2 divisors, whose sum is σ = 20502373754. Its totient is φ = 20502373752.

The previous prime is 20502373751. The next prime is 20502373783. The reversal of 20502373753 is 35737320502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11731489344 + 8770884409 = 108312^2 + 93653^2 .

It is a cyclic number.

It is not a de Polignac number, because 20502373753 - 2¹ = 20502373751 is a prime.

Together with 20502373751, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20502373751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10251186876 + 10251186877.

It is an arithmetic number, because the mean of its divisors is an integer number (10251186877).

Almost surely, 2^20502373753 is an apocalyptic number.

It is an amenable number.

20502373753 is a deficient number, since it is larger than the sum of its proper divisors (1).

20502373753 is an equidigital number, since it uses as much as digits as its factorization.

20502373753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 37.

The spelling of 20502373753 in words is "twenty billion, five hundred two million, three hundred seventy-three thousand, seven hundred fifty-three".