15444161512 has 32 divisors (see below), whose sum is σ = 31196629800. Its totient is φ = 7125490944.

The previous prime is 15444161501. The next prime is 15444161519. The reversal of 15444161512 is 21516144451.

15444161512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13818942916 + 1625218596 = 117554^2 + 40314^2 .

It is a super-2 number, since 2×15444161512² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15444161519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277914 + ... + 328822.

Almost surely, 2^15444161512 is an apocalyptic number.

It is an amenable number.

15444161512 is an abundant number, since it is smaller than the sum of its proper divisors (15752468288).

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

15444161512 is a wasteful number, since it uses less digits than its factorization.

15444161512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53845 (or 53841 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The spelling of 15444161512 in words is "fifteen billion, four hundred forty-four million, one hundred sixty-one thousand, five hundred twelve".