161161551110047 has 2 divisors, whose sum is σ = 161161551110048. Its totient is φ = 161161551110046.

The previous prime is 161161551110041. The next prime is 161161551110059. The reversal of 161161551110047 is 740011155161161.

161161551110047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161161551110047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161161551109991 and 161161551110009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161161551110041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80580775555023 + 80580775555024.

It is an arithmetic number, because the mean of its divisors is an integer number (80580775555024).

Almost surely, 2^{161161551110047} is an apocalyptic number.

161161551110047 is a deficient number, since it is larger than the sum of its proper divisors (1).

161161551110047 is an equidigital number, since it uses as much as digits as its factorization.

161161551110047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 40.

The spelling of 161161551110047 in words is "one hundred sixty-one trillion, one hundred sixty-one billion, five hundred fifty-one million, one hundred ten thousand, forty-seven".