27876766765 has 8 divisors (see below), whose sum is σ = 33457251960. Its totient is φ = 22297992192.

The previous prime is 27876766727. The next prime is 27876766783. The reversal of 27876766765 is 56766767872.

It can be written as a sum of positive squares in 4 ways, for example, as 1992461769 + 25884304996 = 44637^2 + 160886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27876766765 is a prime.

It is a super-2 number, since 2×27876766765² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27876766765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391524 + ... + 457213.

It is an arithmetic number, because the mean of its divisors is an integer number (4182156495).

Almost surely, 2^27876766765 is an apocalyptic number.

It is an amenable number.

27876766765 is a deficient number, since it is larger than the sum of its proper divisors (5580485195).

27876766765 is an equidigital number, since it uses as much as digits as its factorization.

27876766765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855311.

The product of its digits is 248935680, while the sum is 67.

The spelling of 27876766765 in words is "twenty-seven billion, eight hundred seventy-six million, seven hundred sixty-six thousand, seven hundred sixty-five".