19541128126 has 32 divisors (see below), whose sum is σ = 32546142720. Its totient is φ = 8740970496.

The previous prime is 19541128111. The next prime is 19541128133. The reversal of 19541128126 is 62182114591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207715 + ... + 286753.

It is an arithmetic number, because the mean of its divisors is an integer number (1017066960).

Almost surely, 2^19541128126 is an apocalyptic number.

19541128126 is a deficient number, since it is larger than the sum of its proper divisors (13005014594).

19541128126 is a wasteful number, since it uses less digits than its factorization.

19541128126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79348.

The product of its digits is 34560, while the sum is 40.

The spelling of 19541128126 in words is "nineteen billion, five hundred forty-one million, one hundred twenty-eight thousand, one hundred twenty-six".