15161505220000 has 120 divisors (see below), whose sum is σ = 37334718390816. Its totient is φ = 6058888416000.

The previous prime is 15161505219997. The next prime is 15161505220007. The reversal of 15161505220000 is 2250516151.

It is not an unprimeable number, because it can be changed into a prime (15161505220007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20903427 + ... + 21616573.

Almost surely, 2^{15161505220000} is an apocalyptic number.

15161505220000 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 15161505220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18667359195408).

15161505220000 is an abundant number, since it is smaller than the sum of its proper divisors (22173213170816).

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

15161505220000 is an equidigital number, since it uses as much as digits as its factorization.

15161505220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714240 (or 714217 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 15161505220000 its reverse (2250516151), we get a palindrome (15163755736151).

The spelling of 15161505220000 in words is "fifteen trillion, one hundred sixty-one billion, five hundred five million, two hundred twenty thousand".