445747306503 has 4 divisors (see below), whose sum is σ = 594329742008. Its totient is φ = 297164871000.

The previous prime is 445747306457. The next prime is 445747306519. The reversal of 445747306503 is 305603747544.

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

It is not a de Polignac number, because 445747306503 - 2¹⁷ = 445747175431 is a prime.

It is a super-2 number, since 2×445747306503² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445747306603) 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, 74291217748 + ... + 74291217753.

It is an arithmetic number, because the mean of its divisors is an integer number (148582435502).

Almost surely, 2^445747306503 is an apocalyptic number.

445747306503 is a deficient number, since it is larger than the sum of its proper divisors (148582435505).

445747306503 is a wasteful number, since it uses less digits than its factorization.

445747306503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148582435504.

The product of its (nonzero) digits is 4233600, while the sum is 48.

The spelling of 445747306503 in words is "four hundred forty-five billion, seven hundred forty-seven million, three hundred six thousand, five hundred three".