1156633375720 has 256 divisors, whose sum is σ = 2834654330880. Its totient is φ = 423602150400.

The previous prime is 1156633375691. The next prime is 1156633375721. The reversal of 1156633375720 is 275733366511.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1156633375721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 987730735 + ... + 987731905.

It is an arithmetic number, because the mean of its divisors is an integer number (11072868480).

Almost surely, 2^{1156633375720} is an apocalyptic number.

1156633375720 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 1156633375720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417327165440).

1156633375720 is an abundant number, since it is smaller than the sum of its proper divisors (1678020955160).

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

1156633375720 is a wasteful number, since it uses less digits than its factorization.

1156633375720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 49.

The spelling of 1156633375720 in words is "one trillion, one hundred fifty-six billion, six hundred thirty-three million, three hundred seventy-five thousand, seven hundred twenty".