84090532509 has 16 divisors (see below), whose sum is σ = 125113248000. Its totient is φ = 55819748448.

The previous prime is 84090532499. The next prime is 84090532523. The reversal of 84090532509 is 90523509048.

84090532509 is a `hidden beast` number, since 8 + 4 + 0 + 90 + 53 + 2 + 509 = 666.

It is not a de Polignac number, because 84090532509 - 2⁷ = 84090532381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84090532529) 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, 6677109 + ... + 6689690.

It is an arithmetic number, because the mean of its divisors is an integer number (7819578000).

Almost surely, 2^84090532509 is an apocalyptic number.

It is an amenable number.

84090532509 is a deficient number, since it is larger than the sum of its proper divisors (41022715491).

84090532509 is a wasteful number, since it uses less digits than its factorization.

84090532509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13367041 (or 13367035 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 84090532509 in words is "eighty-four billion, ninety million, five hundred thirty-two thousand, five hundred nine".