28732396669 has 2 divisors, whose sum is σ = 28732396670. Its totient is φ = 28732396668.

The previous prime is 28732396577. The next prime is 28732396681. The reversal of 28732396669 is 96669323782.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24960840100 + 3771556569 = 157990^2 + 61413^2 .

It is a cyclic number.

It is not a de Polignac number, because 28732396669 - 2²⁷ = 28598178941 is a prime.

It is a super-2 number, since 2×28732396669² (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 (28732391669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14366198334 + 14366198335.

It is an arithmetic number, because the mean of its divisors is an integer number (14366198335).

Almost surely, 2^28732396669 is an apocalyptic number.

It is an amenable number.

28732396669 is a deficient number, since it is larger than the sum of its proper divisors (1).

28732396669 is an equidigital number, since it uses as much as digits as its factorization.

28732396669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 61.

The spelling of 28732396669 in words is "twenty-eight billion, seven hundred thirty-two million, three hundred ninety-six thousand, six hundred sixty-nine".