19106718545 has 16 divisors (see below), whose sum is σ = 22985034240. Its totient is φ = 15247440000.

The previous prime is 19106718487. The next prime is 19106718551. The reversal of 19106718545 is 54581760191.

It is not a de Polignac number, because 19106718545 - 2¹² = 19106714449 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 19106718545.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5861126 + ... + 5864384.

It is an arithmetic number, because the mean of its divisors is an integer number (1436564640).

Almost surely, 2^19106718545 is an apocalyptic number.

It is an amenable number.

19106718545 is a deficient number, since it is larger than the sum of its proper divisors (3878315695).

19106718545 is a wasteful number, since it uses less digits than its factorization.

19106718545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 19106718545 in words is "nineteen billion, one hundred six million, seven hundred eighteen thousand, five hundred forty-five".