12154679159238 has 480 divisors, whose sum is σ = 36290358720000. Its totient is φ = 2966048616960.

The previous prime is 12154679159201. The next prime is 12154679159239. The reversal of 12154679159238 is 83295197645121.

It is a happy number.

12154679159238 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 4 + 6 + 7 + 9 + 1 + 592 + 38 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154679159239) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1397245813 + ... + 1397254511.

It is an arithmetic number, because the mean of its divisors is an integer number (75604914000).

Almost surely, 2^{12154679159238} is an apocalyptic number.

12154679159238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154679159238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18145179360000).

12154679159238 is an abundant number, since it is smaller than the sum of its proper divisors (24135679560762).

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

12154679159238 is a wasteful number, since it uses less digits than its factorization.

12154679159238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9358 (or 9338 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 63.

The spelling of 12154679159238 in words is "twelve trillion, one hundred fifty-four billion, six hundred seventy-nine million, one hundred fifty-nine thousand, two hundred thirty-eight".