28677917453 has 2 divisors, whose sum is σ = 28677917454. Its totient is φ = 28677917452.

The previous prime is 28677917447. The next prime is 28677917483. The reversal of 28677917453 is 35471977682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17091117289 + 11586800164 = 130733^2 + 107642^2 .

It is a cyclic number.

It is not a de Polignac number, because 28677917453 - 2²⁴ = 28661140237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28677917392 and 28677917401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28677917483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14338958726 + 14338958727.

It is an arithmetic number, because the mean of its divisors is an integer number (14338958727).

Almost surely, 2^28677917453 is an apocalyptic number.

It is an amenable number.

28677917453 is a deficient number, since it is larger than the sum of its proper divisors (1).

28677917453 is an equidigital number, since it uses as much as digits as its factorization.

28677917453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17781120, while the sum is 59.

The spelling of 28677917453 in words is "twenty-eight billion, six hundred seventy-seven million, nine hundred seventeen thousand, four hundred fifty-three".