166012810382 has 4 divisors (see below), whose sum is σ = 249019215576. Its totient is φ = 83006405190.

The previous prime is 166012810367. The next prime is 166012810409. The reversal of 166012810382 is 283018210661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 283018210661 = 1283 ⋅220590967.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41503202594 + ... + 41503202597.

It is an arithmetic number, because the mean of its divisors is an integer number (62254803894).

Almost surely, 2^166012810382 is an apocalyptic number.

166012810382 is a deficient number, since it is larger than the sum of its proper divisors (83006405194).

166012810382 is an equidigital number, since it uses as much as digits as its factorization.

166012810382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83006405193.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 166012810382 in words is "one hundred sixty-six billion, twelve million, eight hundred ten thousand, three hundred eighty-two".