84440443505 has 32 divisors (see below), whose sum is σ = 111922214400. Its totient is φ = 61153128960.

The previous prime is 84440443411. The next prime is 84440443541. The reversal of 84440443505 is 50534404448.

It is a happy number.

It is not a de Polignac number, because 84440443505 - 2¹² = 84440439409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1564001 + ... + 1617089.

It is an arithmetic number, because the mean of its divisors is an integer number (3497569200).

Almost surely, 2^84440443505 is an apocalyptic number.

It is an amenable number.

84440443505 is a deficient number, since it is larger than the sum of its proper divisors (27481770895).

84440443505 is a wasteful number, since it uses less digits than its factorization.

84440443505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53366 (or 53344 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 41.

The spelling of 84440443505 in words is "eighty-four billion, four hundred forty million, four hundred forty-three thousand, five hundred five".