19718570104 has 8 divisors (see below), whose sum is σ = 36972318960. Its totient is φ = 9859285048.

The previous prime is 19718570057. The next prime is 19718570111. The reversal of 19718570104 is 40107581791.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1232410624 + ... + 1232410639.

It is an arithmetic number, because the mean of its divisors is an integer number (4621539870).

Almost surely, 2^19718570104 is an apocalyptic number.

It is an amenable number.

19718570104 is a deficient number, since it is larger than the sum of its proper divisors (17253748856).

19718570104 is a wasteful number, since it uses less digits than its factorization.

19718570104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464821269 (or 2464821265 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 43.

It can be divided in two parts, 197185 and 70104, that added together give a square (267289 = 517²).

The spelling of 19718570104 in words is "nineteen billion, seven hundred eighteen million, five hundred seventy thousand, one hundred four".