15144853379985 has 64 divisors (see below), whose sum is σ = 32389995571200. Its totient is φ = 6558974087616.

The previous prime is 15144853379983. The next prime is 15144853380119. The reversal of 15144853379985 is 58997335844151.

15144853379985 is a `hidden beast` number, since 1 + 5 + 1 + 4 + 4 + 8 + 533 + 7 + 9 + 9 + 85 = 666.

It is not a de Polignac number, because 15144853379985 - 2¹ = 15144853379983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15144853379983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 421726779 + ... + 421762688.

It is an arithmetic number, because the mean of its divisors is an integer number (506093680800).

Almost surely, 2^{15144853379985} is an apocalyptic number.

15144853379985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15144853379985 is an abundant number, since it is smaller than the sum of its proper divisors (17245142191215).

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

15144853379985 is a wasteful number, since it uses less digits than its factorization.

15144853379985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843489507 (or 843489501 counting only the distinct ones).

The product of its digits is 653184000, while the sum is 72.

The spelling of 15144853379985 in words is "fifteen trillion, one hundred forty-four billion, eight hundred fifty-three million, three hundred seventy-nine thousand, nine hundred eighty-five".