445197786121 has 16 divisors (see below), whose sum is σ = 490216364928. Its totient is φ = 400940512000.

The previous prime is 445197786119. The next prime is 445197786161. The reversal of 445197786121 is 121687791544.

It is a cyclic number.

It is not a de Polignac number, because 445197786121 - 2¹ = 445197786119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445197786101) 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, 2392596 + ... + 2571946.

It is an arithmetic number, because the mean of its divisors is an integer number (30638522808).

Almost surely, 2^445197786121 is an apocalyptic number.

It is an amenable number.

445197786121 is a deficient number, since it is larger than the sum of its proper divisors (45018578807).

445197786121 is a wasteful number, since it uses less digits than its factorization.

445197786121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181472.

The product of its digits is 3386880, while the sum is 55.

The spelling of 445197786121 in words is "four hundred forty-five billion, one hundred ninety-seven million, seven hundred eighty-six thousand, one hundred twenty-one".