15539272980 has 288 divisors, whose sum is σ = 56127157632. Its totient is φ = 3175603200.

The previous prime is 15539272961. The next prime is 15539272981. The reversal of 15539272980 is 8927293551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15539272981) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1968802 + ... + 1976678.

It is an arithmetic number, because the mean of its divisors is an integer number (194885964).

Almost surely, 2^15539272980 is an apocalyptic number.

15539272980 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 15539272980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28063578816).

15539272980 is an abundant number, since it is smaller than the sum of its proper divisors (40587884652).

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

15539272980 is a wasteful number, since it uses less digits than its factorization.

15539272980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7975 (or 7966 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 15539272980 in words is "fifteen billion, five hundred thirty-nine million, two hundred seventy-two thousand, nine hundred eighty".