27881125607 has 2 divisors, whose sum is σ = 27881125608. Its totient is φ = 27881125606.

The previous prime is 27881125579. The next prime is 27881125627. The reversal of 27881125607 is 70652118872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27881125607 - 2¹⁸ = 27880863463 is a prime.

It is a super-2 number, since 2×27881125607² (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 (27881125627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13940562803 + 13940562804.

It is an arithmetic number, because the mean of its divisors is an integer number (13940562804).

Almost surely, 2^27881125607 is an apocalyptic number.

27881125607 is a deficient number, since it is larger than the sum of its proper divisors (1).

27881125607 is an equidigital number, since it uses as much as digits as its factorization.

27881125607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 27881125607 in words is "twenty-seven billion, eight hundred eighty-one million, one hundred twenty-five thousand, six hundred seven".