161151273748 has 6 divisors (see below), whose sum is σ = 282014729066. Its totient is φ = 80575636872.

The previous prime is 161151273743. The next prime is 161151273809. The reversal of 161151273748 is 847372151161.

It can be written as a sum of positive squares in only one way, i.e., 145449178884 + 15702094864 = 381378^2 + 125308^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161151273698 and 161151273707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161151273743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143909215 + ... + 20143909222.

Almost surely, 2^161151273748 is an apocalyptic number.

It is an amenable number.

161151273748 is a deficient number, since it is larger than the sum of its proper divisors (120863455318).

161151273748 is a wasteful number, since it uses less digits than its factorization.

161151273748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40287818441 (or 40287818439 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The spelling of 161151273748 in words is "one hundred sixty-one billion, one hundred fifty-one million, two hundred seventy-three thousand, seven hundred forty-eight".