20628883538293 has 2 divisors, whose sum is σ = 20628883538294. Its totient is φ = 20628883538292.

The previous prime is 20628883538261. The next prime is 20628883538327. The reversal of 20628883538293 is 39283538882602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20266626411409 + 362257126884 = 4501847^2 + 601878^2 .

It is a cyclic number.

It is not a de Polignac number, because 20628883538293 - 2⁵ = 20628883538261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20628883538213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10314441769146 + 10314441769147.

It is an arithmetic number, because the mean of its divisors is an integer number (10314441769147).

Almost surely, 2^{20628883538293} is an apocalyptic number.

It is an amenable number.

20628883538293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20628883538293 is an equidigital number, since it uses as much as digits as its factorization.

20628883538293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238878720, while the sum is 67.

The spelling of 20628883538293 in words is "twenty trillion, six hundred twenty-eight billion, eight hundred eighty-three million, five hundred thirty-eight thousand, two hundred ninety-three".