12543576402 has 32 divisors (see below), whose sum is σ = 28938995712. Its totient is φ = 3550383504.

The previous prime is 12543576371. The next prime is 12543576403. The reversal of 12543576402 is 20467534521.

It is a super-2 number, since 2×12543576402² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12543576403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1391098 + ... + 1400085.

It is an arithmetic number, because the mean of its divisors is an integer number (904343616).

Almost surely, 2^12543576402 is an apocalyptic number.

12543576402 is an abundant number, since it is smaller than the sum of its proper divisors (16395419310).

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

12543576402 is a wasteful number, since it uses less digits than its factorization.

12543576402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791302.

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 12543576402 in words is "twelve billion, five hundred forty-three million, five hundred seventy-six thousand, four hundred two".