15534241520 has 80 divisors (see below), whose sum is σ = 41310594048. Its totient is φ = 5321652480.

The previous prime is 15534241507. The next prime is 15534241523. The reversal of 15534241520 is 2514243551.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15534241523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712217 + ... + 733703.

Almost surely, 2^15534241520 is an apocalyptic number.

15534241520 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 15534241520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20655297024).

15534241520 is an abundant number, since it is smaller than the sum of its proper divisors (25776352528).

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

15534241520 is a wasteful number, since it uses less digits than its factorization.

15534241520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22798 (or 22792 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 15534241520 in words is "fifteen billion, five hundred thirty-four million, two hundred forty-one thousand, five hundred twenty".