145446351566 has 4 divisors (see below), whose sum is σ = 218169527352. Its totient is φ = 72723175782.

The previous prime is 145446351553. The next prime is 145446351571. The reversal of 145446351566 is 665153644541.

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, 36361587890 + ... + 36361587893.

It is an arithmetic number, because the mean of its divisors is an integer number (54542381838).

Almost surely, 2^145446351566 is an apocalyptic number.

145446351566 is a deficient number, since it is larger than the sum of its proper divisors (72723175786).

145446351566 is an equidigital number, since it uses as much as digits as its factorization.

145446351566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72723175785.

The product of its digits is 5184000, while the sum is 50.

The spelling of 145446351566 in words is "one hundred forty-five billion, four hundred forty-six million, three hundred fifty-one thousand, five hundred sixty-six".