445431128551804 has 12 divisors (see below), whose sum is σ = 779521989476664. Its totient is φ = 222710560129904.

The previous prime is 445431128551781. The next prime is 445431128551831. The reversal of 445431128551804 is 408155821134544.

It is a super-2 number, since 2×445431128551804² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250836219 + ... + 1251192274.

It is an arithmetic number, because the mean of its divisors is an integer number (64960165789722).

Almost surely, 2^{445431128551804} is an apocalyptic number.

It is an amenable number.

445431128551804 is a deficient number, since it is larger than the sum of its proper divisors (334090860924860).

445431128551804 is a wasteful number, since it uses less digits than its factorization.

445431128551804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502073004 (or 2502073002 counting only the distinct ones).

The product of its (nonzero) digits is 12288000, while the sum is 55.

The spelling of 445431128551804 in words is "four hundred forty-five trillion, four hundred thirty-one billion, one hundred twenty-eight million, five hundred fifty-one thousand, eight hundred four".