84135025009 has 16 divisors (see below), whose sum is σ = 102197754880. Its totient is φ = 67656857040.

The previous prime is 84135024979. The next prime is 84135025019. The reversal of 84135025009 is 90052053148.

It is a cyclic number.

It is not a de Polignac number, because 84135025009 - 2⁵ = 84135024977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84135025019) 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, 3057147 + ... + 3084544.

It is an arithmetic number, because the mean of its divisors is an integer number (6387359680).

Almost surely, 2^84135025009 is an apocalyptic number.

It is an amenable number.

84135025009 is a deficient number, since it is larger than the sum of its proper divisors (18062729871).

84135025009 is a wasteful number, since it uses less digits than its factorization.

84135025009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141820.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 84135025009 in words is "eighty-four billion, one hundred thirty-five million, twenty-five thousand, nine".