15420133332 has 18 divisors (see below), whose sum is σ = 38978670458. Its totient is φ = 5140044432.

The previous prime is 15420133307. The next prime is 15420133349. The reversal of 15420133332 is 23333102451.

It can be written as a sum of positive squares in only one way, i.e., 11143758096 + 4276375236 = 105564^2 + 65394^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 15420133296 and 15420133305.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 214168483 + ... + 214168554.

Almost surely, 2^15420133332 is an apocalyptic number.

15420133332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15420133332 is an abundant number, since it is smaller than the sum of its proper divisors (23558537126).

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

15420133332 is a wasteful number, since it uses less digits than its factorization.

15420133332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428337047 (or 428337042 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 15420133332 its reverse (23333102451), we get a palindrome (38753235783).

The spelling of 15420133332 in words is "fifteen billion, four hundred twenty million, one hundred thirty-three thousand, three hundred thirty-two".