27860560781 has 8 divisors (see below), whose sum is σ = 28200101664. Its totient is φ = 27521112240.

The previous prime is 27860560769. The next prime is 27860560787. The reversal of 27860560781 is 18706506872.

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-27860560781 is a prime.

It is a super-2 number, since 2×27860560781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27860560787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734051 + ... + 771071.

It is an arithmetic number, because the mean of its divisors is an integer number (3525012708).

Almost surely, 2^27860560781 is an apocalyptic number.

It is an amenable number.

27860560781 is a deficient number, since it is larger than the sum of its proper divisors (339540883).

27860560781 is an equidigital number, since it uses as much as digits as its factorization.

27860560781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46171.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 27860560781 in words is "twenty-seven billion, eight hundred sixty million, five hundred sixty thousand, seven hundred eighty-one".