161402075911 has 8 divisors (see below), whose sum is σ = 164585306160. Its totient is φ = 158223953472.

The previous prime is 161402075897. The next prime is 161402075917. The reversal of 161402075911 is 119570204161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161402075911 - 2¹³ = 161402067719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161402075917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213101 + ... + 1339558.

It is an arithmetic number, because the mean of its divisors is an integer number (20573163270).

Almost surely, 2^161402075911 is an apocalyptic number.

161402075911 is a deficient number, since it is larger than the sum of its proper divisors (3183230249).

161402075911 is a wasteful number, since it uses less digits than its factorization.

161402075911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553905.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 161402075911 in words is "one hundred sixty-one billion, four hundred two million, seventy-five thousand, nine hundred eleven".