1161342351664 has 80 divisors (see below), whose sum is σ = 2476096475040. Its totient is φ = 523282913280.

The previous prime is 1161342351647. The next prime is 1161342351667. The reversal of 1161342351664 is 4661532431611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161342351664.

It is not an unprimeable number, because it can be changed into a prime (1161342351667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17061442 + ... + 17129374.

It is an arithmetic number, because the mean of its divisors is an integer number (30951205938).

Almost surely, 2^{1161342351664} 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 1161342351664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238048237520).

1161342351664 is an abundant number, since it is smaller than the sum of its proper divisors (1314754123376).

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

1161342351664 is a wasteful number, since it uses less digits than its factorization.

1161342351664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68798 (or 68792 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The spelling of 1161342351664 in words is "one trillion, one hundred sixty-one billion, three hundred forty-two million, three hundred fifty-one thousand, six hundred sixty-four".