12015452451520 has 112 divisors (see below), whose sum is σ = 32918654203200. Its totient is φ = 4091935371264.

The previous prime is 12015452451517. The next prime is 12015452451523. The reversal of 12015452451520 is 2515425451021.

It is an interprime number because it is at equal distance from previous prime (12015452451517) and next prime (12015452451523).

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×12015452451520² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12015452451520.

It is not an unprimeable number, because it can be changed into a prime (12015452451523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17666379 + ... + 18333898.

Almost surely, 2^{12015452451520} is an apocalyptic number.

12015452451520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12015452451520 is an abundant number, since it is smaller than the sum of its proper divisors (20903201751680).

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

12015452451520 is a wasteful number, since it uses less digits than its factorization.

12015452451520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36000450 (or 36000440 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 37.

The spelling of 12015452451520 in words is "twelve trillion, fifteen billion, four hundred fifty-two million, four hundred fifty-one thousand, five hundred twenty".