15501231145200 has 240 divisors, whose sum is σ = 52289529148800. Its totient is φ = 3914567193600.

The previous prime is 15501231145159. The next prime is 15501231145243. The reversal of 15501231145200 is 254113210551.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 58669390 + ... + 58933010.

It is an arithmetic number, because the mean of its divisors is an integer number (217873038120).

Almost surely, 2^{15501231145200} is an apocalyptic number.

15501231145200 is a gapful number since it is divisible by the number (10) 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 15501231145200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26144764574400).

15501231145200 is an abundant number, since it is smaller than the sum of its proper divisors (36788298003600).

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

15501231145200 is a wasteful number, since it uses less digits than its factorization.

15501231145200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266240 (or 266229 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 15501231145200 its reverse (254113210551), we get a palindrome (15755344355751).

The spelling of 15501231145200 in words is "fifteen trillion, five hundred one billion, two hundred thirty-one million, one hundred forty-five thousand, two hundred".