84447995905 has 32 divisors (see below), whose sum is σ = 125245209600. Its totient is φ = 53229076992.

The previous prime is 84447995857. The next prime is 84447995917. The reversal of 84447995905 is 50959974448.

It is not a de Polignac number, because 84447995905 - 2¹¹ = 84447993857 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, 279540 + ... + 497029.

It is an arithmetic number, because the mean of its divisors is an integer number (3913912800).

Almost surely, 2^84447995905 is an apocalyptic number.

It is an amenable number.

84447995905 is a deficient number, since it is larger than the sum of its proper divisors (40797213695).

84447995905 is a wasteful number, since it uses less digits than its factorization.

84447995905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776833.

The product of its (nonzero) digits is 65318400, while the sum is 64.

The spelling of 84447995905 in words is "eighty-four billion, four hundred forty-seven million, nine hundred ninety-five thousand, nine hundred five".