19804893771131 has 16 divisors (see below), whose sum is σ = 23965833101760. Its totient is φ = 15976892252160.

The previous prime is 19804893771109. The next prime is 19804893771137. The reversal of 19804893771131 is 13117739840891.

It is not a de Polignac number, because 19804893771131 - 2²² = 19804889576827 is a prime.

It is a super-2 number, since 2×19804893771131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19804893771137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11457851 + ... + 13072571.

It is an arithmetic number, because the mean of its divisors is an integer number (1497864568860).

Almost surely, 2^{19804893771131} is an apocalyptic number.

19804893771131 is a deficient number, since it is larger than the sum of its proper divisors (4160939330629).

19804893771131 is a wasteful number, since it uses less digits than its factorization.

19804893771131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717814.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 19804893771131 in words is "nineteen trillion, eight hundred four billion, eight hundred ninety-three million, seven hundred seventy-one thousand, one hundred thirty-one".