15543630012 has 24 divisors (see below), whose sum is σ = 36274557312. Its totient is φ = 5180340400.

The previous prime is 15543630001. The next prime is 15543630017. The reversal of 15543630012 is 21003634551.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15543630017) 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, 32064 + ... + 179207.

It is an arithmetic number, because the mean of its divisors is an integer number (1511439888).

Almost surely, 2^15543630012 is an apocalyptic number.

15543630012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15543630012 is an abundant number, since it is smaller than the sum of its proper divisors (20730927300).

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

15543630012 is a wasteful number, since it uses less digits than its factorization.

15543630012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217409 (or 217407 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 15543630012 in words is "fifteen billion, five hundred forty-three million, six hundred thirty thousand, twelve".