27581056007 has 2 divisors, whose sum is σ = 27581056008. Its totient is φ = 27581056006.

The previous prime is 27581055977. The next prime is 27581056031. The reversal of 27581056007 is 70065018572.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27581056007 is a prime.

It is a super-2 number, since 2×27581056007² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27581056807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13790528003 + 13790528004.

It is an arithmetic number, because the mean of its divisors is an integer number (13790528004).

Almost surely, 2^27581056007 is an apocalyptic number.

27581056007 is a deficient number, since it is larger than the sum of its proper divisors (1).

27581056007 is an equidigital number, since it uses as much as digits as its factorization.

27581056007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 27581056007 in words is "twenty-seven billion, five hundred eighty-one million, fifty-six thousand, seven".