15045421050 has 144 divisors (see below), whose sum is σ = 44390998080. Its totient is φ = 3623040000.

The previous prime is 15045421031. The next prime is 15045421051. The reversal of 15045421050 is 5012454051.

15045421050 is a `hidden beast` number, since 1 + 504 + 54 + 2 + 105 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (15045421051) 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 71 ways as a sum of consecutive naturals, for example, 737386 + ... + 757514.

It is an arithmetic number, because the mean of its divisors is an integer number (308270820).

Almost surely, 2^15045421050 is an apocalyptic number.

15045421050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15045421050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22195499040).

15045421050 is an abundant number, since it is smaller than the sum of its proper divisors (29345577030).

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

15045421050 is a wasteful number, since it uses less digits than its factorization.

15045421050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20309 (or 20301 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 15045421050 in words is "fifteen billion, forty-five million, four hundred twenty-one thousand, fifty".