15812138496 has 480 divisors, whose sum is σ = 54411160320. Its totient is φ = 4034150400.

The previous prime is 15812138491. The next prime is 15812138497. The reversal of 15812138496 is 69483121851.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15812138491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58781050 + ... + 58781318.

It is an arithmetic number, because the mean of its divisors is an integer number (113356584).

Almost surely, 2^15812138496 is an apocalyptic number.

15812138496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15812138496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27205580160).

15812138496 is an abundant number, since it is smaller than the sum of its proper divisors (38599021824).

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

15812138496 is a wasteful number, since it uses less digits than its factorization.

15812138496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 363 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The spelling of 15812138496 in words is "fifteen billion, eight hundred twelve million, one hundred thirty-eight thousand, four hundred ninety-six".