1543623249012 has 24 divisors (see below), whose sum is σ = 3878848164576. Its totient is φ = 474960999648.

The previous prime is 1543623249011. The next prime is 1543623249019. The reversal of 1543623249012 is 2109423263451.

It is a super-2 number, since 2×1543623249012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543623249011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4947510258 + ... + 4947510569.

It is an arithmetic number, because the mean of its divisors is an integer number (161618673524).

Almost surely, 2^{1543623249012} is an apocalyptic number.

1543623249012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1543623249012 is an abundant number, since it is smaller than the sum of its proper divisors (2335224915564).

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

1543623249012 is a wasteful number, since it uses less digits than its factorization.

1543623249012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9895020847 (or 9895020845 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 1543623249012 in words is "one trillion, five hundred forty-three billion, six hundred twenty-three million, two hundred forty-nine thousand, twelve".