1164545297880 has 256 divisors, whose sum is σ = 3639545395200. Its totient is φ = 297829509120.

The previous prime is 1164545297827. The next prime is 1164545297921. The reversal of 1164545297880 is 887925454611.

It is a Cunningham number, because it is equal to 1079141²-1.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 239566650 + ... + 239571510.

It is an arithmetic number, because the mean of its divisors is an integer number (14216974200).

Almost surely, 2^{1164545297880} is an apocalyptic number.

1164545297880 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 1164545297880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1819772697600).

1164545297880 is an abundant number, since it is smaller than the sum of its proper divisors (2475000097320).

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

1164545297880 is a wasteful number, since it uses less digits than its factorization.

1164545297880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674 (or 5670 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 60.

The spelling of 1164545297880 in words is "one trillion, one hundred sixty-four billion, five hundred forty-five million, two hundred ninety-seven thousand, eight hundred eighty".