1161966617604 has 216 divisors, whose sum is σ = 3301010949600. Its totient is φ = 357235287552.

The previous prime is 1161966617521. The next prime is 1161966617621. The reversal of 1161966617604 is 4067166691611.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 286974172 + ... + 286978220.

It is an arithmetic number, because the mean of its divisors is an integer number (15282458100).

Almost surely, 2^{1161966617604} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161966617604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650505474800).

1161966617604 is an abundant number, since it is smaller than the sum of its proper divisors (2139044331996).

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

1161966617604 is a wasteful number, since it uses less digits than its factorization.

1161966617604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 1161966617604 in words is "one trillion, one hundred sixty-one billion, nine hundred sixty-six million, six hundred seventeen thousand, six hundred four".