15533011340 has 96 divisors (see below), whose sum is σ = 40703620608. Its totient is φ = 4837248000.

The previous prime is 15533011331. The next prime is 15533011343. The reversal of 15533011340 is 4311033551.

It is not an unprimeable number, because it can be changed into a prime (15533011343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2092235 + ... + 2099645.

It is an arithmetic number, because the mean of its divisors is an integer number (423996048).

Almost surely, 2^15533011340 is an apocalyptic number.

15533011340 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 15533011340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20351810304).

15533011340 is an abundant number, since it is smaller than the sum of its proper divisors (25170609268).

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

15533011340 is a wasteful number, since it uses less digits than its factorization.

15533011340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8799 (or 8797 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 15533011340 its reverse (4311033551), we get a palindrome (19844044891).

The spelling of 15533011340 in words is "fifteen billion, five hundred thirty-three million, eleven thousand, three hundred forty".