28077318009 has 32 divisors (see below), whose sum is σ = 44854104960. Its totient is φ = 17255830464.

The previous prime is 28077317971. The next prime is 28077318013. The reversal of 28077318009 is 90081377082.

It is not a de Polignac number, because 28077318009 - 2⁷ = 28077317881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28077318089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219582 + ... + 323064.

It is an arithmetic number, because the mean of its divisors is an integer number (1401690780).

Almost surely, 2^28077318009 is an apocalyptic number.

It is an amenable number.

28077318009 is a deficient number, since it is larger than the sum of its proper divisors (16776786951).

28077318009 is a wasteful number, since it uses less digits than its factorization.

28077318009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104278 (or 104272 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 28077318009 in words is "twenty-eight billion, seventy-seven million, three hundred eighteen thousand, nine".