20019696127 has 4 divisors (see below), whose sum is σ = 20030163120. Its totient is φ = 20009229136.

The previous prime is 20019696089. The next prime is 20019696163. The reversal of 20019696127 is 72169691002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20019696127 - 2⁷ = 20019695999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20019691127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5230627 + ... + 5234452.

It is an arithmetic number, because the mean of its divisors is an integer number (5007540780).

Almost surely, 2^20019696127 is an apocalyptic number.

20019696127 is a deficient number, since it is larger than the sum of its proper divisors (10466993).

20019696127 is a wasteful number, since it uses less digits than its factorization.

20019696127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10466992.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 20019696127 in words is "twenty billion, nineteen million, six hundred ninety-six thousand, one hundred twenty-seven".