269650690021 has 2 divisors, whose sum is σ = 269650690022. Its totient is φ = 269650690020.

The previous prime is 269650690013. The next prime is 269650690027. The reversal of 269650690021 is 120096056962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268623487521 + 1027202500 = 518289^2 + 32050^2 .

It is a cyclic number.

It is not a de Polignac number, because 269650690021 - 2³ = 269650690013 is a prime.

It is a super-2 number, since 2×269650690021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (269650690027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134825345010 + 134825345011.

It is an arithmetic number, because the mean of its divisors is an integer number (134825345011).

Almost surely, 2^269650690021 is an apocalyptic number.

It is an amenable number.

269650690021 is a deficient number, since it is larger than the sum of its proper divisors (1).

269650690021 is an equidigital number, since it uses as much as digits as its factorization.

269650690021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 269650690021 in words is "two hundred sixty-nine billion, six hundred fifty million, six hundred ninety thousand, twenty-one".