19471657158912 has 144 divisors (see below), whose sum is σ = 59229074927232. Its totient is φ = 5563069071360.

The previous prime is 19471657158887. The next prime is 19471657158971. The reversal of 19471657158912 is 21985175617491.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133881112 + ... + 134026472.

It is an arithmetic number, because the mean of its divisors is an integer number (411313020328).

Almost surely, 2^{19471657158912} is an apocalyptic number.

19471657158912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19471657158912 is an abundant number, since it is smaller than the sum of its proper divisors (39757417768320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19471657158912 is a wasteful number, since it uses less digits than its factorization.

19471657158912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170304 (or 170290 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 66.

The spelling of 19471657158912 in words is "nineteen trillion, four hundred seventy-one billion, six hundred fifty-seven million, one hundred fifty-eight thousand, nine hundred twelve".