19814147362172 has 12 divisors (see below), whose sum is σ = 34674796832760. Its totient is φ = 9907062552816.

The previous prime is 19814147362067. The next prime is 19814147362181. The reversal of 19814147362172 is 27126374141891.

It is a super-3 number, since 3×19814147362172³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225654 + ... + 6676962.

It is an arithmetic number, because the mean of its divisors is an integer number (2889566402730).

Almost surely, 2^{19814147362172} is an apocalyptic number.

It is a pronic number, being equal to 4451308×4451309.

It is an amenable number.

19814147362172 is a deficient number, since it is larger than the sum of its proper divisors (14860649470588).

19814147362172 is a wasteful number, since it uses less digits than its factorization.

19814147362172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5564140 (or 5564138 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 56.

The spelling of 19814147362172 in words is "nineteen trillion, eight hundred fourteen billion, one hundred forty-seven million, three hundred sixty-two thousand, one hundred seventy-two".