16639141919851 has 16 divisors (see below), whose sum is σ = 19001513963520. Its totient is φ = 14422592733120.

The previous prime is 16639141919839. The next prime is 16639141919909. The reversal of 16639141919851 is 15891914193661.

It is not a de Polignac number, because 16639141919851 - 2³¹ = 16636994436203 is a prime.

It is a super-2 number, since 2×16639141919851² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16639141919831) 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, 104980491 + ... + 105138868.

It is an arithmetic number, because the mean of its divisors is an integer number (1187594622720).

Almost surely, 2^{16639141919851} is an apocalyptic number.

16639141919851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16639141919851 is a deficient number, since it is larger than the sum of its proper divisors (2362372043669).

16639141919851 is a wasteful number, since it uses less digits than its factorization.

16639141919851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210119706.

The product of its digits is 12597120, while the sum is 64.

The spelling of 16639141919851 in words is "sixteen trillion, six hundred thirty-nine billion, one hundred forty-one million, nine hundred nineteen thousand, eight hundred fifty-one".