166148169478 has 8 divisors (see below), whose sum is σ = 263882386872. Its totient is φ = 78187373856.

The previous prime is 166148169469. The next prime is 166148169487. The reversal of 166148169478 is 874961841661.

It is an interprime number because it is at equal distance from previous prime (166148169469) and next prime (166148169487).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443355400 + ... + 2443355467.

It is an arithmetic number, because the mean of its divisors is an integer number (32985298359).

Almost surely, 2^166148169478 is an apocalyptic number.

166148169478 is a deficient number, since it is larger than the sum of its proper divisors (97734217394).

166148169478 is a wasteful number, since it uses less digits than its factorization.

166148169478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886710886.

The product of its digits is 13934592, while the sum is 61.

The spelling of 166148169478 in words is "one hundred sixty-six billion, one hundred forty-eight million, one hundred sixty-nine thousand, four hundred seventy-eight".