1161665708658 has 48 divisors (see below), whose sum is σ = 2910547059840. Its totient is φ = 306373372704.

The previous prime is 1161665708639. The next prime is 1161665708717. The reversal of 1161665708658 is 8568075661611.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151967098 + ... + 151974741.

It is an arithmetic number, because the mean of its divisors is an integer number (60636397080).

Almost surely, 2^{1161665708658} is an apocalyptic number.

1161665708658 is an abundant number, since it is smaller than the sum of its proper divisors (1748881351182).

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

1161665708658 is a wasteful number, since it uses less digits than its factorization.

1161665708658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303941871 (or 303941864 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 1161665708658 in words is "one trillion, one hundred sixty-one billion, six hundred sixty-five million, seven hundred eight thousand, six hundred fifty-eight".