445661802556 has 12 divisors (see below), whose sum is σ = 806801539320. Its totient is φ = 215147077040.

The previous prime is 445661802473. The next prime is 445661802559. The reversal of 445661802556 is 655208166544.

It is a super-2 number, since 2×445661802556² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445661802559) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1920955930 + ... + 1920956161.

It is an arithmetic number, because the mean of its divisors is an integer number (67233461610).

Almost surely, 2^445661802556 is an apocalyptic number.

It is an amenable number.

445661802556 is a deficient number, since it is larger than the sum of its proper divisors (361139736764).

445661802556 is a wasteful number, since it uses less digits than its factorization.

445661802556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841912124 (or 3841912122 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 445661802556 in words is "four hundred forty-five billion, six hundred sixty-one million, eight hundred two thousand, five hundred fifty-six".