15555791229048 has 192 divisors, whose sum is σ = 49221100094400. Its totient is φ = 4346379786240.

The previous prime is 15555791228993. The next prime is 15555791229049. The reversal of 15555791229048 is 84092219755551.

15555791229048 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 579 + 12 + 2 + 9 + 0 + 48 = 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 (15555791229049) 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, 3856348 + ... + 6781076.

It is an arithmetic number, because the mean of its divisors is an integer number (256359896325).

Almost surely, 2^{15555791229048} is an apocalyptic number.

15555791229048 is a gapful number since it is divisible by the number (18) 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 15555791229048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24610550047200).

15555791229048 is an abundant number, since it is smaller than the sum of its proper divisors (33665308865352).

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

15555791229048 is a wasteful number, since it uses less digits than its factorization.

15555791229048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924982 (or 2924975 counting only the distinct ones).

The product of its (nonzero) digits is 45360000, while the sum is 63.

The spelling of 15555791229048 in words is "fifteen trillion, five hundred fifty-five billion, seven hundred ninety-one million, two hundred twenty-nine thousand, forty-eight".