12020015155040 has 48 divisors (see below), whose sum is σ = 28678447087920. Its totient is φ = 4760402035200.

The previous prime is 12020015155037. The next prime is 12020015155079. The reversal of 12020015155040 is 4055151002021.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 371890250 + ... + 371922569.

It is an arithmetic number, because the mean of its divisors is an integer number (597467647665).

Almost surely, 2^{12020015155040} is an apocalyptic number.

12020015155040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020015155040 is an abundant number, since it is smaller than the sum of its proper divisors (16658431932880).

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

12020015155040 is a wasteful number, since it uses less digits than its factorization.

12020015155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743812935 (or 743812927 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 12020015155040 its reverse (4055151002021), we get a palindrome (16075166157061).

The spelling of 12020015155040 in words is "twelve trillion, twenty billion, fifteen million, one hundred fifty-five thousand, forty".