19142517667 has 32 divisors (see below), whose sum is σ = 24966144000. Its totient is φ = 14243240448.

The previous prime is 19142517649. The next prime is 19142517697. The reversal of 19142517667 is 76671524191.

It is a cyclic number.

It is not a de Polignac number, because 19142517667 - 2¹⁵ = 19142484899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19142517667.

It is not an unprimeable number, because it can be changed into a prime (19142517607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2221834 + ... + 2230432.

It is an arithmetic number, because the mean of its divisors is an integer number (780192000).

Almost surely, 2^19142517667 is an apocalyptic number.

19142517667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

19142517667 is a deficient number, since it is larger than the sum of its proper divisors (5823626333).

19142517667 is a wasteful number, since it uses less digits than its factorization.

19142517667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075.

The product of its digits is 635040, while the sum is 49.

The spelling of 19142517667 in words is "nineteen billion, one hundred forty-two million, five hundred seventeen thousand, six hundred sixty-seven".