12144780530 has 32 divisors (see below), whose sum is σ = 22015802160. Its totient is φ = 4823470080.

The previous prime is 12144780517. The next prime is 12144780547. The reversal of 12144780530 is 3508744121.

It can be written as a sum of positive squares in 8 ways, for example, as 3329636209 + 8815144321 = 57703^2 + 93889^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3830786 + ... + 3833954.

Almost surely, 2^12144780530 is an apocalyptic number.

12144780530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12144780530 is a deficient number, since it is larger than the sum of its proper divisors (9871021630).

12144780530 is a wasteful number, since it uses less digits than its factorization.

12144780530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774.

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 12144780530 in words is "twelve billion, one hundred forty-four million, seven hundred eighty thousand, five hundred thirty".