161040077 has 8 divisors (see below), whose sum is σ = 175792032. Its totient is φ = 146306800.

The previous prime is 161040073. The next prime is 161040083. The reversal of 161040077 is 770040161.

161040077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161040077 - 2² = 161040073 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 (161040073) 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, 18302 + ... + 25632.

It is an arithmetic number, because the mean of its divisors is an integer number (21974004).

Almost surely, 2^161040077 is an apocalyptic number.

It is an amenable number.

161040077 is a deficient number, since it is larger than the sum of its proper divisors (14751955).

161040077 is a wasteful number, since it uses less digits than its factorization.

161040077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 161040077 is about 12690.1566972201. The cubic root of 161040077 is about 544.0573182919.

The spelling of 161040077 in words is "one hundred sixty-one million, forty thousand, seventy-seven".