28964723779 has 2 divisors, whose sum is σ = 28964723780. Its totient is φ = 28964723778.

The previous prime is 28964723741. The next prime is 28964723789. The reversal of 28964723779 is 97732746982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28964723779 - 2¹⁵ = 28964691011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28964723779.

It is not a weakly prime, because it can be changed into another prime (28964723719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14482361889 + 14482361890.

It is an arithmetic number, because the mean of its divisors is an integer number (14482361890).

Almost surely, 2^28964723779 is an apocalyptic number.

28964723779 is a deficient number, since it is larger than the sum of its proper divisors (1).

28964723779 is an equidigital number, since it uses as much as digits as its factorization.

28964723779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64012032, while the sum is 64.

The spelling of 28964723779 in words is "twenty-eight billion, nine hundred sixty-four million, seven hundred twenty-three thousand, seven hundred seventy-nine".