77453105161 has 4 divisors (see below), whose sum is σ = 81529584400. Its totient is φ = 73376625924.

The previous prime is 77453105143. The next prime is 77453105209. The reversal of 77453105161 is 16150135477.

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 77453105161 - 2¹⁵ = 77453072393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77453105101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2038239591 + ... + 2038239628.

It is an arithmetic number, because the mean of its divisors is an integer number (20382396100).

Almost surely, 2^77453105161 is an apocalyptic number.

It is an amenable number.

77453105161 is a deficient number, since it is larger than the sum of its proper divisors (4076479239).

77453105161 is a wasteful number, since it uses less digits than its factorization.

77453105161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076479238.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 77453105161 in words is "seventy-seven billion, four hundred fifty-three million, one hundred five thousand, one hundred sixty-one".