145205554166 has 4 divisors (see below), whose sum is σ = 217808331252. Its totient is φ = 72602777082.

The previous prime is 145205554147. The next prime is 145205554171. The reversal of 145205554166 is 661455502541.

It is a semiprime because it is the product of two primes.

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, 36301388540 + ... + 36301388543.

It is an arithmetic number, because the mean of its divisors is an integer number (54452082813).

Almost surely, 2^145205554166 is an apocalyptic number.

145205554166 is a deficient number, since it is larger than the sum of its proper divisors (72602777086).

145205554166 is an equidigital number, since it uses as much as digits as its factorization.

145205554166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72602777085.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 145205554166 in words is "one hundred forty-five billion, two hundred five million, five hundred fifty-four thousand, one hundred sixty-six".