20306376253 has 2 divisors, whose sum is σ = 20306376254. Its totient is φ = 20306376252.

The previous prime is 20306376247. The next prime is 20306376289. The reversal of 20306376253 is 35267360302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19842103044 + 464273209 = 140862^2 + 21547^2 .

It is a cyclic number.

It is not a de Polignac number, because 20306376253 - 2¹⁷ = 20306245181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20306376553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10153188126 + 10153188127.

It is an arithmetic number, because the mean of its divisors is an integer number (10153188127).

Almost surely, 2^20306376253 is an apocalyptic number.

It is an amenable number.

20306376253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20306376253 is an equidigital number, since it uses as much as digits as its factorization.

20306376253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 37.

The spelling of 20306376253 in words is "twenty billion, three hundred six million, three hundred seventy-six thousand, two hundred fifty-three".