823139911332 has 72 divisors (see below), whose sum is σ = 2190617520000. Its totient is φ = 259892463168.

The previous prime is 823139911303. The next prime is 823139911367. The reversal of 823139911332 is 233119931328.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3827653 + ... + 4036979.

Almost surely, 2^823139911332 is an apocalyptic number.

It is an amenable number.

823139911332 is an abundant number, since it is smaller than the sum of its proper divisors (1367477608668).

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

823139911332 is a wasteful number, since it uses less digits than its factorization.

823139911332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215105 (or 215100 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The spelling of 823139911332 in words is "eight hundred twenty-three billion, one hundred thirty-nine million, nine hundred eleven thousand, three hundred thirty-two".