15438104136 has 192 divisors, whose sum is σ = 51604425600. Its totient is φ = 4060191744.

The previous prime is 15438104119. The next prime is 15438104153. The reversal of 15438104136 is 63140183451.

15438104136 is a `hidden beast` number, since 1 + 543 + 8 + 104 + 1 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (15438104119) and next prime (15438104153).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 15438104136.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2480100 + ... + 2486316.

It is an arithmetic number, because the mean of its divisors is an integer number (268773050).

Almost surely, 2^15438104136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15438104136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25802212800).

15438104136 is an abundant number, since it is smaller than the sum of its proper divisors (36166321464).

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

15438104136 is a wasteful number, since it uses less digits than its factorization.

15438104136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6628 (or 6621 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 15438104136 its reverse (63140183451), we get a palindrome (78578287587).

The spelling of 15438104136 in words is "fifteen billion, four hundred thirty-eight million, one hundred four thousand, one hundred thirty-six".