16534599091 has 8 divisors (see below), whose sum is σ = 16599513600. Its totient is φ = 16469798592.

The previous prime is 16534599077. The next prime is 16534599101. The reversal of 16534599091 is 19099543561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16534599091 - 2¹³ = 16534590899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16534597091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268135 + ... + 323983.

It is an arithmetic number, because the mean of its divisors is an integer number (2074939200).

Almost surely, 2^16534599091 is an apocalyptic number.

16534599091 is a deficient number, since it is larger than the sum of its proper divisors (64914509).

16534599091 is an equidigital number, since it uses as much as digits as its factorization.

16534599091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57005.

The product of its (nonzero) digits is 1312200, while the sum is 52.

The spelling of 16534599091 in words is "sixteen billion, five hundred thirty-four million, five hundred ninety-nine thousand, ninety-one".