15533011332 has 60 divisors (see below), whose sum is σ = 40816919836. Its totient is φ = 5150822400.

The previous prime is 15533011331. The next prime is 15533011343. The reversal of 15533011332 is 23311033551.

15533011332 is a `hidden beast` number, since 15 + 533 + 0 + 113 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3010058496 + 12522952836 = 54864^2 + 111906^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 15533011296 and 15533011305.

It is not an unprimeable number, because it can be changed into a prime (15533011331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61669 + ... + 186732.

Almost surely, 2^15533011332 is an apocalyptic number.

15533011332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15533011332 is an abundant number, since it is smaller than the sum of its proper divisors (25283908504).

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

15533011332 is a wasteful number, since it uses less digits than its factorization.

15533011332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248610 (or 248599 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

Adding to 15533011332 its reverse (23311033551), we get a palindrome (38844044883).

The spelling of 15533011332 in words is "fifteen billion, five hundred thirty-three million, eleven thousand, three hundred thirty-two".