166863158492 has 24 divisors (see below), whose sum is σ = 301447789440. Its totient is φ = 80735532480.

The previous prime is 166863158477. The next prime is 166863158507. The reversal of 166863158492 is 294851368661.

It is an interprime number because it is at equal distance from previous prime (166863158477) and next prime (166863158507).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3117734 + ... + 3170802.

It is an arithmetic number, because the mean of its divisors is an integer number (12560324560).

Almost surely, 2^166863158492 is an apocalyptic number.

It is an amenable number.

166863158492 is a deficient number, since it is larger than the sum of its proper divisors (134584630948).

166863158492 is a wasteful number, since it uses less digits than its factorization.

166863158492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78461 (or 78459 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 59.

The spelling of 166863158492 in words is "one hundred sixty-six billion, eight hundred sixty-three million, one hundred fifty-eight thousand, four hundred ninety-two".