991302247232 has 224 divisors, whose sum is σ = 2314263591936. Its totient is φ = 416260915200.

The previous prime is 991302247217. The next prime is 991302247241. The reversal of 991302247232 is 232742203199.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 443138018 + ... + 443140254.

Almost surely, 2^991302247232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 991302247232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157131795968).

991302247232 is an abundant number, since it is smaller than the sum of its proper divisors (1322961344704).

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

991302247232 is a wasteful number, since it uses less digits than its factorization.

991302247232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2935 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 991302247232 in words is "nine hundred ninety-one billion, three hundred two million, two hundred forty-seven thousand, two hundred thirty-two".