445425820231 has 16 divisors (see below), whose sum is σ = 517738003200. Its totient is φ = 375338096640.

The previous prime is 445425820193. The next prime is 445425820249. The reversal of 445425820231 is 132028524544.

It is a cyclic number.

It is not a de Polignac number, because 445425820231 - 2¹⁵ = 445425787463 is a prime.

It is a super-2 number, since 2×445425820231² (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 (445425820291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2171706 + ... + 2367943.

It is an arithmetic number, because the mean of its divisors is an integer number (32358625200).

Almost surely, 2^445425820231 is an apocalyptic number.

445425820231 is a deficient number, since it is larger than the sum of its proper divisors (72312182969).

445425820231 is a wasteful number, since it uses less digits than its factorization.

445425820231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539894.

The product of its (nonzero) digits is 307200, while the sum is 40.

The spelling of 445425820231 in words is "four hundred forty-five billion, four hundred twenty-five million, eight hundred twenty thousand, two hundred thirty-one".