28977647311 has 2 divisors, whose sum is σ = 28977647312. Its totient is φ = 28977647310.

The previous prime is 28977647291. The next prime is 28977647317. The reversal of 28977647311 is 11374677982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28977647311 - 2¹⁵ = 28977614543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28977647317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14488823655 + 14488823656.

It is an arithmetic number, because the mean of its divisors is an integer number (14488823656).

Almost surely, 2^28977647311 is an apocalyptic number.

28977647311 is a deficient number, since it is larger than the sum of its proper divisors (1).

28977647311 is an equidigital number, since it uses as much as digits as its factorization.

28977647311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 55.

The spelling of 28977647311 in words is "twenty-eight billion, nine hundred seventy-seven million, six hundred forty-seven thousand, three hundred eleven".