28546923077 has 2 divisors, whose sum is σ = 28546923078. Its totient is φ = 28546923076.

The previous prime is 28546923071. The next prime is 28546923109. The reversal of 28546923077 is 77032964582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17304350116 + 11242572961 = 131546^2 + 106031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28546923077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28546923071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14273461538 + 14273461539.

It is an arithmetic number, because the mean of its divisors is an integer number (14273461539).

Almost surely, 2^28546923077 is an apocalyptic number.

It is an amenable number.

28546923077 is a deficient number, since it is larger than the sum of its proper divisors (1).

28546923077 is an equidigital number, since it uses as much as digits as its factorization.

28546923077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 28546923077 in words is "twenty-eight billion, five hundred forty-six million, nine hundred twenty-three thousand, seventy-seven".