12155030540 has 12 divisors (see below), whose sum is σ = 25525564176. Its totient is φ = 4862012208.

The previous prime is 12155030539. The next prime is 12155030561. The reversal of 12155030540 is 4503055121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303875744 + ... + 303875783.

It is an arithmetic number, because the mean of its divisors is an integer number (2127130348).

Almost surely, 2^12155030540 is an apocalyptic number.

12155030540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12155030540 is an abundant number, since it is smaller than the sum of its proper divisors (13370533636).

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

12155030540 is a wasteful number, since it uses less digits than its factorization.

12155030540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607751536 (or 607751534 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 12155030540 its reverse (4503055121), we get a palindrome (16658085661).

The spelling of 12155030540 in words is "twelve billion, one hundred fifty-five million, thirty thousand, five hundred forty".