15423451220 has 24 divisors (see below), whose sum is σ = 32552016000. Its totient is φ = 6138376992.

The previous prime is 15423451207. The next prime is 15423451223. The reversal of 15423451220 is 2215432451.

15423451220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15423451223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933640 + ... + 1941599.

It is an arithmetic number, because the mean of its divisors is an integer number (1356334000).

Almost surely, 2^15423451220 is an apocalyptic number.

15423451220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15423451220 is an abundant number, since it is smaller than the sum of its proper divisors (17128564780).

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

15423451220 is a wasteful number, since it uses less digits than its factorization.

15423451220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875447 (or 3875445 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 15423451220 its reverse (2215432451), we get a palindrome (17638883671).

The spelling of 15423451220 in words is "fifteen billion, four hundred twenty-three million, four hundred fifty-one thousand, two hundred twenty".