28662240461 has 2 divisors, whose sum is σ = 28662240462. Its totient is φ = 28662240460.

The previous prime is 28662240403. The next prime is 28662240539. The reversal of 28662240461 is 16404226682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26027368900 + 2634871561 = 161330^2 + 51331^2 .

It is a cyclic number.

It is not a de Polignac number, because 28662240461 - 2²⁶ = 28595131597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28662240401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14331120230 + 14331120231.

It is an arithmetic number, because the mean of its divisors is an integer number (14331120231).

Almost surely, 2^28662240461 is an apocalyptic number.

It is an amenable number.

28662240461 is a deficient number, since it is larger than the sum of its proper divisors (1).

28662240461 is an equidigital number, since it uses as much as digits as its factorization.

28662240461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 28662240461 in words is "twenty-eight billion, six hundred sixty-two million, two hundred forty thousand, four hundred sixty-one".