19711148474 has 12 divisors (see below), whose sum is σ = 31408249614. Its totient is φ = 9275834304.

The previous prime is 19711148467. The next prime is 19711148477. The reversal of 19711148474 is 47484111791.

It can be written as a sum of positive squares in 3 ways, for example, as 18935136025 + 776012449 = 137605^2 + 27857^2 .

It is not an unprimeable number, because it can be changed into a prime (19711148477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17050589 + ... + 17051744.

Almost surely, 2^19711148474 is an apocalyptic number.

19711148474 is a deficient number, since it is larger than the sum of its proper divisors (11697101140).

19711148474 is a wasteful number, since it uses less digits than its factorization.

19711148474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34102369 (or 34102352 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The spelling of 19711148474 in words is "nineteen billion, seven hundred eleven million, one hundred forty-eight thousand, four hundred seventy-four".