20019192011 has 24 divisors (see below), whose sum is σ = 25422594624. Its totient is φ = 15622346880.

The previous prime is 20019191999. The next prime is 20019192013. The reversal of 20019192011 is 11029191002.

It is not a de Polignac number, because 20019192011 - 2¹⁰ = 20019190987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20019192013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168755 + ... + 261756.

It is an arithmetic number, because the mean of its divisors is an integer number (1059274776).

Almost surely, 2^20019192011 is an apocalyptic number.

20019192011 is a deficient number, since it is larger than the sum of its proper divisors (5403402613).

20019192011 is a wasteful number, since it uses less digits than its factorization.

20019192011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430611 (or 430604 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 20019192011 in words is "twenty billion, nineteen million, one hundred ninety-two thousand, eleven".