15501442000 has 160 divisors (see below), whose sum is σ = 41563911168. Its totient is φ = 5544000000.

The previous prime is 15501441971. The next prime is 15501442013. The reversal of 15501442000 is 24410551.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1336225 + ... + 1347775.

Almost surely, 2^15501442000 is an apocalyptic number.

15501442000 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 15501442000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20781955584).

15501442000 is an abundant number, since it is smaller than the sum of its proper divisors (26062469168).

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

15501442000 is a wasteful number, since it uses less digits than its factorization.

15501442000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11646 (or 11630 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 15501442000 its reverse (24410551), we get a palindrome (15525852551).

The spelling of 15501442000 in words is "fifteen billion, five hundred one million, four hundred forty-two thousand".