161748372047 has 16 divisors (see below), whose sum is σ = 170579455200. Its totient is φ = 152949358080.

The previous prime is 161748372043. The next prime is 161748372143. The reversal of 161748372047 is 740273847161.

161748372047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161748372047 - 2² = 161748372043 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161748371986 and 161748372004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161748372041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40223897 + ... + 40227917.

It is an arithmetic number, because the mean of its divisors is an integer number (10661215950).

Almost surely, 2^161748372047 is an apocalyptic number.

161748372047 is a deficient number, since it is larger than the sum of its proper divisors (8831083153).

161748372047 is a wasteful number, since it uses less digits than its factorization.

161748372047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7466.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 161748372047 in words is "one hundred sixty-one billion, seven hundred forty-eight million, three hundred seventy-two thousand, forty-seven".