15534523420 has 48 divisors (see below), whose sum is σ = 35289596160. Its totient is φ = 5710081536.

The previous prime is 15534523399. The next prime is 15534523421. The reversal of 15534523420 is 2432543551.

15534523420 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 (15534523421) 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 15 ways as a sum of consecutive naturals, for example, 75985 + ... + 191944.

It is an arithmetic number, because the mean of its divisors is an integer number (735199920).

Almost surely, 2^15534523420 is an apocalyptic number.

15534523420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15534523420 is an abundant number, since it is smaller than the sum of its proper divisors (19755072740).

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

15534523420 is a wasteful number, since it uses less digits than its factorization.

15534523420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268174 (or 268172 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 15534523420 in words is "fifteen billion, five hundred thirty-four million, five hundred twenty-three thousand, four hundred twenty".