145573305673 has 4 divisors (see below), whose sum is σ = 145574109568. Its totient is φ = 145572501780.

The previous prime is 145573305653. The next prime is 145573305721. The reversal of 145573305673 is 376503375541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 145573305673 - 2²⁵ = 145539751241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145573305643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11308 + ... + 539698.

It is an arithmetic number, because the mean of its divisors is an integer number (36393527392).

Almost surely, 2^145573305673 is an apocalyptic number.

It is an amenable number.

145573305673 is a deficient number, since it is larger than the sum of its proper divisors (803895).

145573305673 is an equidigital number, since it uses as much as digits as its factorization.

145573305673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803894.

The product of its (nonzero) digits is 3969000, while the sum is 49.

The spelling of 145573305673 in words is "one hundred forty-five billion, five hundred seventy-three million, three hundred five thousand, six hundred seventy-three".