15812674144 has 48 divisors (see below), whose sum is σ = 32213356560. Its totient is φ = 7635640320.

The previous prime is 15812674093. The next prime is 15812674147. The reversal of 15812674144 is 44147621851.

It is a super-2 number, since 2×15812674144² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 15812674144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15812674147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57904 + ... + 187024.

It is an arithmetic number, because the mean of its divisors is an integer number (671111595).

Almost surely, 2^15812674144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15812674144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16106678280).

15812674144 is an abundant number, since it is smaller than the sum of its proper divisors (16400682416).

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

15812674144 is a wasteful number, since it uses less digits than its factorization.

15812674144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129263 (or 129255 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The spelling of 15812674144 in words is "fifteen billion, eight hundred twelve million, six hundred seventy-four thousand, one hundred forty-four".