66158122185166 has 32 divisors (see below), whose sum is σ = 109283914108800. Its totient is φ = 29787173589600.

The previous prime is 66158122185139. The next prime is 66158122185251.

66158122185166 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 66158122185166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17514760 + ... + 20954308.

It is an arithmetic number, because the mean of its divisors is an integer number (3415122315900).

Almost surely, 2^{66158122185166} is an apocalyptic number.

66158122185166 is a deficient number, since it is larger than the sum of its proper divisors (43125791923634).

66158122185166 is a wasteful number, since it uses less digits than its factorization.

66158122185166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447840.

The product of its digits is 8294400, while the sum is 58.

The spelling of 66158122185166 in words is "sixty-six trillion, one hundred fifty-eight billion, one hundred twenty-two million, one hundred eighty-five thousand, one hundred sixty-six".