1164278161380 has 96 divisors (see below), whose sum is σ = 3300971304960. Its totient is φ = 306593873920.

The previous prime is 1164278161349. The next prime is 1164278161391. The reversal of 1164278161380 is 831618724611.

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, 1199236 + ... + 1940804.

It is an arithmetic number, because the mean of its divisors is an integer number (34385117760).

Almost surely, 2^{1164278161380} is an apocalyptic number.

1164278161380 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 1164278161380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650485652480).

1164278161380 is an abundant number, since it is smaller than the sum of its proper divisors (2136693143580).

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

1164278161380 is a wasteful number, since it uses less digits than its factorization.

1164278161380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741909 (or 741907 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 1164278161380 in words is "one trillion, one hundred sixty-four billion, two hundred seventy-eight million, one hundred sixty-one thousand, three hundred eighty".