12013453040520 has 64 divisors (see below), whose sum is σ = 37607331265920. Its totient is φ = 3064301064704.

The previous prime is 12013453040467. The next prime is 12013453040549. The reversal of 12013453040520 is 2504035431021.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2176347429 + ... + 2176352948.

It is an arithmetic number, because the mean of its divisors is an integer number (587614551030).

Almost surely, 2^{12013453040520} is an apocalyptic number.

12013453040520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013453040520 is an abundant number, since it is smaller than the sum of its proper divisors (25593878225400).

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

12013453040520 is a wasteful number, since it uses less digits than its factorization.

12013453040520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352700414 (or 4352700410 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 12013453040520 its reverse (2504035431021), we get a palindrome (14517488471541).

The spelling of 12013453040520 in words is "twelve trillion, thirteen billion, four hundred fifty-three million, forty thousand, five hundred twenty".