1241543554512 has 80 divisors (see below), whose sum is σ = 3347138388480. Its totient is φ = 395810845056.

The previous prime is 1241543554507. The next prime is 1241543554513. The reversal of 1241543554512 is 2154553451421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241543554513) 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, 10827303 + ... + 10941369.

It is an arithmetic number, because the mean of its divisors is an integer number (41839229856).

Almost surely, 2^{1241543554512} is an apocalyptic number.

1241543554512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1241543554512 is an abundant number, since it is smaller than the sum of its proper divisors (2105594833968).

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

1241543554512 is a wasteful number, since it uses less digits than its factorization.

1241543554512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123960 (or 123954 counting only the distinct ones).

The product of its digits is 480000, while the sum is 42.

The spelling of 1241543554512 in words is "one trillion, two hundred forty-one billion, five hundred forty-three million, five hundred fifty-four thousand, five hundred twelve".