15450490000 has 225 divisors, whose sum is σ = 41484071629. Its totient is φ = 5568640000.

The previous prime is 15450489953. The next prime is 15450490037. The reversal of 15450490000 is 9405451.

The square root of 15450490000 is 124300.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 15102443664 + 348046336 = 122892^2 + 18656^2 .

It is a super-4 number, since 4×15450490000⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 136729944 + ... + 136730056.

Almost surely, 2^15450490000 is an apocalyptic number.

15450490000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15450490000 is the 124300-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15450490000

15450490000 is an abundant number, since it is smaller than the sum of its proper divisors (26033581629).

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

15450490000 is an equidigital number, since it uses as much as digits as its factorization.

15450490000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Multiplying 15450490000 by its product of nonzero digits (3600), we get a square (55621764000000 = 7458000²).

Adding to 15450490000 its reverse (9405451), we get a palindrome (15459895451).

The spelling of 15450490000 in words is "fifteen billion, four hundred fifty million, four hundred ninety thousand".