19042551161 has 32 divisors (see below), whose sum is σ = 21003079680. Its totient is φ = 17213099904.

The previous prime is 19042551119. The next prime is 19042551163. The reversal of 19042551161 is 16115524091.

It is a de Polignac number, because none of the positive numbers 2^k-19042551161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19042551163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4134686 + ... + 4139288.

It is an arithmetic number, because the mean of its divisors is an integer number (656346240).

Almost surely, 2^19042551161 is an apocalyptic number.

It is an amenable number.

19042551161 is a deficient number, since it is larger than the sum of its proper divisors (1960528519).

19042551161 is a wasteful number, since it uses less digits than its factorization.

19042551161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 19042551161 in words is "nineteen billion, forty-two million, five hundred fifty-one thousand, one hundred sixty-one".