445139878311 has 24 divisors (see below), whose sum is σ = 644914722816. Its totient is φ = 295868097360.

The previous prime is 445139878243. The next prime is 445139878343. The reversal of 445139878311 is 113878931544.

445139878311 is a `hidden beast` number, since 4 + 4 + 513 + 98 + 7 + 8 + 31 + 1 = 666.

It is not a de Polignac number, because 445139878311 - 2²⁹ = 444603007399 is a prime.

It is a super-2 number, since 2×445139878311² (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 (445139878811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4436646 + ... + 4535868.

It is an arithmetic number, because the mean of its divisors is an integer number (26871446784).

Almost surely, 2^445139878311 is an apocalyptic number.

445139878311 is a deficient number, since it is larger than the sum of its proper divisors (199774844505).

445139878311 is a wasteful number, since it uses less digits than its factorization.

445139878311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100723 (or 100720 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 445139878311 in words is "four hundred forty-five billion, one hundred thirty-nine million, eight hundred seventy-eight thousand, three hundred eleven".