27780525079 has 2 divisors, whose sum is σ = 27780525080. Its totient is φ = 27780525078.

The previous prime is 27780525053. The next prime is 27780525107. The reversal of 27780525079 is 97052508772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27780525079 - 2¹⁹ = 27780000791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27780525049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13890262539 + 13890262540.

It is an arithmetic number, because the mean of its divisors is an integer number (13890262540).

Almost surely, 2^27780525079 is an apocalyptic number.

27780525079 is a deficient number, since it is larger than the sum of its proper divisors (1).

27780525079 is an equidigital number, since it uses as much as digits as its factorization.

27780525079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2469600, while the sum is 52.

The spelling of 27780525079 in words is "twenty-seven billion, seven hundred eighty million, five hundred twenty-five thousand, seventy-nine".