161063632773 has 6 divisors (see below), whose sum is σ = 232647469574. Its totient is φ = 107375755176.

The previous prime is 161063632753. The next prime is 161063632801. The reversal of 161063632773 is 377236360161.

It is a happy number.

161063632773 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 6 + 3 + 632 + 7 + 7 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 151774913889 + 9288718884 = 389583^2 + 96378^2 .

It is not a de Polignac number, because 161063632773 - 2⁸ = 161063632517 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 (161063632753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8947979590 + ... + 8947979607.

Almost surely, 2^161063632773 is an apocalyptic number.

It is an amenable number.

161063632773 is a deficient number, since it is larger than the sum of its proper divisors (71583836801).

161063632773 is a wasteful number, since it uses less digits than its factorization.

161063632773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17895959203 (or 17895959200 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The spelling of 161063632773 in words is "one hundred sixty-one billion, sixty-three million, six hundred thirty-two thousand, seven hundred seventy-three".