15534051020 has 48 divisors (see below), whose sum is σ = 33731970048. Its totient is φ = 6002796480.

The previous prime is 15534050993. The next prime is 15534051041. The reversal of 15534051020 is 2015043551.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342599 + ... + 385281.

It is an arithmetic number, because the mean of its divisors is an integer number (702749376).

Almost surely, 2^15534051020 is an apocalyptic number.

15534051020 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 15534051020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16865985024).

15534051020 is an abundant number, since it is smaller than the sum of its proper divisors (18197919028).

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

15534051020 is a wasteful number, since it uses less digits than its factorization.

15534051020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43310 (or 43308 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 15534051020 its reverse (2015043551), we get a palindrome (17549094571).

The spelling of 15534051020 in words is "fifteen billion, five hundred thirty-four million, fifty-one thousand, twenty".