28502953013 has 2 divisors, whose sum is σ = 28502953014. Its totient is φ = 28502953012.

The previous prime is 28502953009. The next prime is 28502953033. The reversal of 28502953013 is 31035920582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28501205329 + 1747684 = 168823^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 28502953013 - 2² = 28502953009 is a prime.

It is a super-2 number, since 2×28502953013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28502953033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14251476506 + 14251476507.

It is an arithmetic number, because the mean of its divisors is an integer number (14251476507).

Almost surely, 2^28502953013 is an apocalyptic number.

It is an amenable number.

28502953013 is a deficient number, since it is larger than the sum of its proper divisors (1).

28502953013 is an equidigital number, since it uses as much as digits as its factorization.

28502953013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 28502953013 in words is "twenty-eight billion, five hundred two million, nine hundred fifty-three thousand, thirteen".