1161720066067 has 16 divisors (see below), whose sum is σ = 1332524400480. Its totient is φ = 1002975321600.

The previous prime is 1161720066043. The next prime is 1161720066097. The reversal of 1161720066067 is 7606600271611.

It is a cyclic number.

It is not a de Polignac number, because 1161720066067 - 2¹⁹ = 1161719541779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161720066097) 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, 29830998 + ... + 29869915.

It is an arithmetic number, because the mean of its divisors is an integer number (83282775030).

Almost surely, 2^{1161720066067} is an apocalyptic number.

1161720066067 is a deficient number, since it is larger than the sum of its proper divisors (170804334413).

1161720066067 is a wasteful number, since it uses less digits than its factorization.

1161720066067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59701014.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 1161720066067 in words is "one trillion, one hundred sixty-one billion, seven hundred twenty million, sixty-six thousand, sixty-seven".