19312249317147 has 48 divisors (see below), whose sum is σ = 29171509855488. Its totient is φ = 12288340658880.

The previous prime is 19312249317143. The next prime is 19312249317181. The reversal of 19312249317147 is 74171394221391.

19312249317147 is a `hidden beast` number, since 1 + 9 + 3 + 1 + 2 + 2 + 493 + 1 + 7 + 147 = 666.

It is not a de Polignac number, because 19312249317147 - 2² = 19312249317143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19312249317093 and 19312249317102.

It is not an unprimeable number, because it can be changed into a prime (19312249317143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 292740988 + ... + 292806950.

It is an arithmetic number, because the mean of its divisors is an integer number (607739788656).

Almost surely, 2^{19312249317147} is an apocalyptic number.

19312249317147 is a deficient number, since it is larger than the sum of its proper divisors (9859260538341).

19312249317147 is a wasteful number, since it uses less digits than its factorization.

19312249317147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69040 (or 69037 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The spelling of 19312249317147 in words is "nineteen trillion, three hundred twelve billion, two hundred forty-nine million, three hundred seventeen thousand, one hundred forty-seven".