27900165777 has 16 divisors (see below), whose sum is σ = 40585715712. Its totient is φ = 16907667920.

The previous prime is 27900165737. The next prime is 27900165781. The reversal of 27900165777 is 77756100972.

It is not a de Polignac number, because 27900165777 - 2¹⁹ = 27899641489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27900165737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413728 + ... + 476414.

It is an arithmetic number, because the mean of its divisors is an integer number (2536607232).

Almost surely, 2^27900165777 is an apocalyptic number.

It is an amenable number.

27900165777 is a deficient number, since it is larger than the sum of its proper divisors (12685549935).

27900165777 is a wasteful number, since it uses less digits than its factorization.

27900165777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76188.

The product of its (nonzero) digits is 1296540, while the sum is 51.

The spelling of 27900165777 in words is "twenty-seven billion, nine hundred million, one hundred sixty-five thousand, seven hundred seventy-seven".