28877679047797 has 2 divisors, whose sum is σ = 28877679047798. Its totient is φ = 28877679047796.

The previous prime is 28877679047759. The next prime is 28877679047813. The reversal of 28877679047797 is 79774097677882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19866551610481 + 9011127437316 = 4457191^2 + 3001854^2 .

It is a cyclic number.

It is not a de Polignac number, because 28877679047797 - 2¹⁹ = 28877678523509 is a prime.

It is a super-2 number, since 2×28877679047797² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28877679048797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14438839523898 + 14438839523899.

It is an arithmetic number, because the mean of its divisors is an integer number (14438839523899).

Almost surely, 2^{28877679047797} is an apocalyptic number.

It is an amenable number.

28877679047797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28877679047797 is an equidigital number, since it uses as much as digits as its factorization.

28877679047797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29274835968, while the sum is 88.

The spelling of 28877679047797 in words is "twenty-eight trillion, eight hundred seventy-seven billion, six hundred seventy-nine million, forty-seven thousand, seven hundred ninety-seven".