55577743161 has 4 divisors (see below), whose sum is σ = 74103657552. Its totient is φ = 37051828772.

The previous prime is 55577743127. The next prime is 55577743189. The reversal of 55577743161 is 16134777555.

55577743161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55577743161 - 2¹⁴ = 55577726777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55577743261) 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, 9262957191 + ... + 9262957196.

It is an arithmetic number, because the mean of its divisors is an integer number (18525914388).

Almost surely, 2^55577743161 is an apocalyptic number.

It is an amenable number.

55577743161 is a deficient number, since it is larger than the sum of its proper divisors (18525914391).

55577743161 is a wasteful number, since it uses less digits than its factorization.

55577743161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18525914390.

The product of its digits is 3087000, while the sum is 51.

The spelling of 55577743161 in words is "fifty-five billion, five hundred seventy-seven million, seven hundred forty-three thousand, one hundred sixty-one".