145622633566 has 4 divisors (see below), whose sum is σ = 218433950352. Its totient is φ = 72811316782.

The previous prime is 145622633557. The next prime is 145622633587. The reversal of 145622633566 is 665336226541.

145622633566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36405658390 + ... + 36405658393.

It is an arithmetic number, because the mean of its divisors is an integer number (54608487588).

Almost surely, 2^145622633566 is an apocalyptic number.

145622633566 is a deficient number, since it is larger than the sum of its proper divisors (72811316786).

145622633566 is an equidigital number, since it uses as much as digits as its factorization.

145622633566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72811316785.

The product of its digits is 4665600, while the sum is 49.

The spelling of 145622633566 in words is "one hundred forty-five billion, six hundred twenty-two million, six hundred thirty-three thousand, five hundred sixty-six".