1165912937280 has 1680 divisors, whose sum is σ = 5248167344640. Its totient is φ = 240463282176.

The previous prime is 1165912937261. The next prime is 1165912937323. The reversal of 1165912937280 is 827392195611.

It is a happy number.

1165912937280 is a `hidden beast` number, since 1 + 1 + 6 + 591 + 29 + 3 + 7 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1680).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1441177516 + ... + 1441178324.

Almost surely, 2^{1165912937280} is an apocalyptic number.

1165912937280 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 1165912937280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2624083672320).

1165912937280 is an abundant number, since it is smaller than the sum of its proper divisors (4082254407360).

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

1165912937280 is a wasteful number, since it uses less digits than its factorization.

1165912937280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 1165912937280 in words is "one trillion, one hundred sixty-five billion, nine hundred twelve million, nine hundred thirty-seven thousand, two hundred eighty".