166423411544515 has 16 divisors (see below), whose sum is σ = 212061518877600. Its totient is φ = 124947993300480.

The previous prime is 166423411544513. The next prime is 166423411544539. The reversal of 166423411544515 is 515445114324661.

It is not a de Polignac number, because 166423411544515 - 2¹ = 166423411544513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166423411544513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2805016881 + ... + 2805076210.

It is an arithmetic number, because the mean of its divisors is an integer number (13253844929850).

Almost surely, 2^{166423411544515} is an apocalyptic number.

166423411544515 is a deficient number, since it is larger than the sum of its proper divisors (45638107333085).

166423411544515 is a wasteful number, since it uses less digits than its factorization.

166423411544515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610093462.

The product of its digits is 6912000, while the sum is 52.

The spelling of 166423411544515 in words is "one hundred sixty-six trillion, four hundred twenty-three billion, four hundred eleven million, five hundred forty-four thousand, five hundred fifteen".