15847145145 has 24 divisors (see below), whose sum is σ = 29581338696. Its totient is φ = 7801671168.

The previous prime is 15847145143. The next prime is 15847145159. The reversal of 15847145145 is 54154174851.

It is a happy number.

15847145145 is a `hidden beast` number, since 1 + 584 + 7 + 14 + 51 + 4 + 5 = 666.

15847145145 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 3279165696 + 12567979449 = 57264^2 + 112107^2 .

It is not a de Polignac number, because 15847145145 - 2¹ = 15847145143 is a prime.

It is a super-2 number, since 2×15847145145² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 15847145145.

It is not an unprimeable number, because it can be changed into a prime (15847145143) 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 23 ways as a sum of consecutive naturals, for example, 13543984 + ... + 13545153.

It is an arithmetic number, because the mean of its divisors is an integer number (1232555779).

Almost surely, 2^15847145145 is an apocalyptic number.

15847145145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15847145145 is a deficient number, since it is larger than the sum of its proper divisors (13734193551).

15847145145 is a wasteful number, since it uses less digits than its factorization.

15847145145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27089161 (or 27089158 counting only the distinct ones).

The product of its digits is 448000, while the sum is 45.

The spelling of 15847145145 in words is "fifteen billion, eight hundred forty-seven million, one hundred forty-five thousand, one hundred forty-five".