15660166615627 has 2 divisors, whose sum is σ = 15660166615628. Its totient is φ = 15660166615626.

The previous prime is 15660166615601. The next prime is 15660166615673. The reversal of 15660166615627 is 72651666106651.

15660166615627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15660166615627 is a prime.

It is not a weakly prime, because it can be changed into another prime (15660161615627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7830083307813 + 7830083307814.

It is an arithmetic number, because the mean of its divisors is an integer number (7830083307814).

Almost surely, 2^{15660166615627} is an apocalyptic number.

15660166615627 is a deficient number, since it is larger than the sum of its proper divisors (1).

15660166615627 is an equidigital number, since it uses as much as digits as its factorization.

15660166615627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 15660166615627 in words is "fifteen trillion, six hundred sixty billion, one hundred sixty-six million, six hundred fifteen thousand, six hundred twenty-seven".