16639582201 has 12 divisors (see below), whose sum is σ = 19282866480. Its totient is φ = 14237072960.

The previous prime is 16639582189. The next prime is 16639582249. The reversal of 16639582201 is 10228593661.

It is not a de Polignac number, because 16639582201 - 2⁷ = 16639582073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16639582601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2613931 + ... + 2620288.

It is an arithmetic number, because the mean of its divisors is an integer number (1606905540).

Almost surely, 2^16639582201 is an apocalyptic number.

16639582201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16639582201 is a deficient number, since it is larger than the sum of its proper divisors (2643284279).

16639582201 is a wasteful number, since it uses less digits than its factorization.

16639582201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234264 (or 5234247 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 16639582201 in words is "sixteen billion, six hundred thirty-nine million, five hundred eighty-two thousand, two hundred one".