1172333831680 has 320 divisors, whose sum is σ = 3212613093888. Its totient is φ = 406123970560.

The previous prime is 1172333831623. The next prime is 1172333831719. The reversal of 1172333831680 is 861383332711.

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×1172333831680² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 1172333831680.

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, 166450239 + ... + 166457281.

Almost surely, 2^{1172333831680} is an apocalyptic number.

1172333831680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172333831680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606306546944).

1172333831680 is an abundant number, since it is smaller than the sum of its proper divisors (2040279262208).

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

1172333831680 is a wasteful number, since it uses less digits than its factorization.

1172333831680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357 (or 7341 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 1172333831680 in words is "one trillion, one hundred seventy-two billion, three hundred thirty-three million, eight hundred thirty-one thousand, six hundred eighty".