23212478812 has 24 divisors (see below), whose sum is σ = 40723042304. Its totient is φ = 11577358512.

The previous prime is 23212478803. The next prime is 23212478813. The reversal of 23212478812 is 21887421232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212478813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3510013 + ... + 3516619.

Almost surely, 2^23212478812 is an apocalyptic number.

It is an amenable number.

23212478812 is a deficient number, since it is larger than the sum of its proper divisors (17510563492).

23212478812 is a wasteful number, since it uses less digits than its factorization.

23212478812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8665 (or 8663 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The spelling of 23212478812 in words is "twenty-three billion, two hundred twelve million, four hundred seventy-eight thousand, eight hundred twelve".