19617742870 has 16 divisors (see below), whose sum is σ = 38522113488. Its totient is φ = 7133724640.

The previous prime is 19617742831. The next prime is 19617742883. The reversal of 19617742870 is 7824771691.

19617742870 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89171449 + ... + 89171668.

It is an arithmetic number, because the mean of its divisors is an integer number (2407632093).

Almost surely, 2^19617742870 is an apocalyptic number.

19617742870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19617742870 is a deficient number, since it is larger than the sum of its proper divisors (18904370618).

19617742870 is a wasteful number, since it uses less digits than its factorization.

19617742870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178343135.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The spelling of 19617742870 in words is "nineteen billion, six hundred seventeen million, seven hundred forty-two thousand, eight hundred seventy".