19431104147964 has 72 divisors (see below), whose sum is σ = 50445948073248. Its totient is φ = 6301862985600.

The previous prime is 19431104147953. The next prime is 19431104148017. The reversal of 19431104147964 is 46974140113491.

19431104147964 is a `hidden beast` number, since 1 + 9 + 4 + 3 + 1 + 104 + 1 + 479 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19431104147964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99204094 + ... + 99399770.

It is an arithmetic number, because the mean of its divisors is an integer number (700638167684).

Almost surely, 2^{19431104147964} is an apocalyptic number.

It is an amenable number.

19431104147964 is an abundant number, since it is smaller than the sum of its proper divisors (31014843925284).

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

19431104147964 is a wasteful number, since it uses less digits than its factorization.

19431104147964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270275 (or 270270 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 19431104147964 in words is "nineteen trillion, four hundred thirty-one billion, one hundred four million, one hundred forty-seven thousand, nine hundred sixty-four".