120161010566761 has 4 divisors (see below), whose sum is σ = 120699849179392. Its totient is φ = 119622171954132.

The previous prime is 120161010566713. The next prime is 120161010566813. The reversal of 120161010566761 is 167665010161021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120161010566761 - 2³¹ = 120158863083113 is a prime.

It is a super-2 number, since 2×120161010566761² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120161010566461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269419305981 + ... + 269419306426.

It is an arithmetic number, because the mean of its divisors is an integer number (30174962294848).

Almost surely, 2^{120161010566761} is an apocalyptic number.

It is an amenable number.

120161010566761 is a deficient number, since it is larger than the sum of its proper divisors (538838612631).

120161010566761 is an equidigital number, since it uses as much as digits as its factorization.

120161010566761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538838612630.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 120161010566761 in words is "one hundred twenty trillion, one hundred sixty-one billion, ten million, five hundred sixty-six thousand, seven hundred sixty-one".