15320005450 has 24 divisors (see below), whose sum is σ = 29477806380. Its totient is φ = 5916691200.

The previous prime is 15320005427. The next prime is 15320005469. The reversal of 15320005450 is 5450002351.

It can be written as a sum of positive squares in 6 ways, for example, as 7611341049 + 7708664401 = 87243^2 + 87799^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 5281311 + ... + 5284210.

Almost surely, 2^15320005450 is an apocalyptic number.

15320005450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15320005450 is a deficient number, since it is larger than the sum of its proper divisors (14157800930).

15320005450 is a wasteful number, since it uses less digits than its factorization.

15320005450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10565562 (or 10565557 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 15320005450 in words is "fifteen billion, three hundred twenty million, five thousand, four hundred fifty".