12155053724 has 24 divisors (see below), whose sum is σ = 23744759808. Its totient is φ = 5396534640.

The previous prime is 12155053723. The next prime is 12155053769. The reversal of 12155053724 is 42735055121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155053723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3210332 + ... + 3214115.

It is an arithmetic number, because the mean of its divisors is an integer number (989364992).

Almost surely, 2^12155053724 is an apocalyptic number.

It is an amenable number.

12155053724 is a deficient number, since it is larger than the sum of its proper divisors (11589706084).

12155053724 is a wasteful number, since it uses less digits than its factorization.

12155053724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424505 (or 6424503 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 12155053724 in words is "twelve billion, one hundred fifty-five million, fifty-three thousand, seven hundred twenty-four".