15847145144 has 16 divisors (see below), whose sum is σ = 29794365600. Its totient is φ = 7901980992.

The previous prime is 15847145143. The next prime is 15847145159. The reversal of 15847145144 is 44154174851.

It is a happy number.

It is a super-2 number, since 2×15847145144² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15847145095 and 15847145104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15847145143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2695829 + ... + 2701700.

It is an arithmetic number, because the mean of its divisors is an integer number (1862147850).

Almost surely, 2^15847145144 is an apocalyptic number.

It is an amenable number.

15847145144 is a deficient number, since it is larger than the sum of its proper divisors (13947220456).

15847145144 is a wasteful number, since it uses less digits than its factorization.

15847145144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397902 (or 5397898 counting only the distinct ones).

The product of its digits is 358400, while the sum is 44.

The spelling of 15847145144 in words is "fifteen billion, eight hundred forty-seven million, one hundred forty-five thousand, one hundred forty-four".