27700061761 has 12 divisors (see below), whose sum is σ = 28044780624. Its totient is φ = 27359525600.

The previous prime is 27700061731. The next prime is 27700061777. The reversal of 27700061761 is 16716000772.

It is not a de Polignac number, because 27700061761 - 2⁷ = 27700061633 is a prime.

It is a super-2 number, since 2×27700061761² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27700061761.

It is not an unprimeable number, because it can be changed into a prime (27700061731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14343966 + ... + 14345896.

It is an arithmetic number, because the mean of its divisors is an integer number (2337065052).

Almost surely, 2^27700061761 is an apocalyptic number.

It is an amenable number.

27700061761 is a deficient number, since it is larger than the sum of its proper divisors (344718863).

27700061761 is an equidigital number, since it uses as much as digits as its factorization.

27700061761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920 (or 3831 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 37.

The spelling of 27700061761 in words is "twenty-seven billion, seven hundred million, sixty-one thousand, seven hundred sixty-one".