15849474689412 has 144 divisors (see below), whose sum is σ = 49324962016512. Its totient is φ = 4178768520960.

The previous prime is 15849474689407. The next prime is 15849474689423. The reversal of 15849474689412 is 21498647494851.

15849474689412 is a `hidden beast` number, since 1 + 5 + 8 + 4 + 9 + 474 + 68 + 94 + 1 + 2 = 666.

It is a super-2 number, since 2×15849474689412² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9695638 + ... + 11211794.

It is an arithmetic number, because the mean of its divisors is an integer number (342534458448).

Almost surely, 2^{15849474689412} is an apocalyptic number.

15849474689412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15849474689412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24662481008256).

15849474689412 is an abundant number, since it is smaller than the sum of its proper divisors (33475487327100).

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

15849474689412 is a wasteful number, since it uses less digits than its factorization.

15849474689412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519378 (or 1519373 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 72.

The spelling of 15849474689412 in words is "fifteen trillion, eight hundred forty-nine billion, four hundred seventy-four million, six hundred eighty-nine thousand, four hundred twelve".