15320120450 has 24 divisors (see below), whose sum is σ = 28554958080. Its totient is φ = 6115245200.

The previous prime is 15320120437. The next prime is 15320120467. The reversal of 15320120450 is 5402102351.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295886 + ... + 343785.

It is an arithmetic number, because the mean of its divisors is an integer number (1189789920).

Almost surely, 2^15320120450 is an apocalyptic number.

15320120450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15320120450 is a deficient number, since it is larger than the sum of its proper divisors (13234837630).

15320120450 is a wasteful number, since it uses less digits than its factorization.

15320120450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640162 (or 640157 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 15320120450 in words is "fifteen billion, three hundred twenty million, one hundred twenty thousand, four hundred fifty".