1234687643332 has 96 divisors (see below), whose sum is σ = 2623205337984. Its totient is φ = 500992128000.

The previous prime is 1234687643323. The next prime is 1234687643377. The reversal of 1234687643332 is 2333467864321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 1234687643332.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2235688 + ... + 2732704.

It is an arithmetic number, because the mean of its divisors is an integer number (27325055604).

Almost surely, 2^{1234687643332} is an apocalyptic number.

It is an amenable number.

1234687643332 is an abundant number, since it is smaller than the sum of its proper divisors (1388517694652).

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

1234687643332 is a wasteful number, since it uses less digits than its factorization.

1234687643332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497189 (or 497187 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 52.

It can be divided in two parts, 12346 and 87643332, that added together give a palindrome (87655678).

The spelling of 1234687643332 in words is "one trillion, two hundred thirty-four billion, six hundred eighty-seven million, six hundred forty-three thousand, three hundred thirty-two".