12155320452000 has 768 divisors, whose sum is σ = 46278992148480. Its totient is φ = 2757970944000.

The previous prime is 12155320451969. The next prime is 12155320452013. The reversal of 12155320452000 is 25402355121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 208134804 + ... + 208193196.

It is an arithmetic number, because the mean of its divisors is an integer number (60259104360).

Almost surely, 2^{12155320452000} is an apocalyptic number.

12155320452000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12155320452000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23139496074240).

12155320452000 is an abundant number, since it is smaller than the sum of its proper divisors (34123671696480).

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

12155320452000 is a wasteful number, since it uses less digits than its factorization.

12155320452000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58534 (or 58516 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 12155320452000 in words is "twelve trillion, one hundred fifty-five billion, three hundred twenty million, four hundred fifty-two thousand".