161345237373 has 12 divisors (see below), whose sum is σ = 233170610400. Its totient is φ = 107509778376.

The previous prime is 161345237371. The next prime is 161345237393. The reversal of 161345237373 is 373732543161.

161345237373 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 45 + 237 + 373 = 666.

It is not a de Polignac number, because 161345237373 - 2¹ = 161345237371 is a prime.

It is a super-2 number, since 2×161345237373² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161345237371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4457073 + ... + 4493126.

It is an arithmetic number, because the mean of its divisors is an integer number (19430884200).

Almost surely, 2^161345237373 is an apocalyptic number.

It is an amenable number.

161345237373 is a deficient number, since it is larger than the sum of its proper divisors (71825373027).

161345237373 is a wasteful number, since it uses less digits than its factorization.

161345237373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8952208 (or 8952205 counting only the distinct ones).

The product of its digits is 952560, while the sum is 45.

The spelling of 161345237373 in words is "one hundred sixty-one billion, three hundred forty-five million, two hundred thirty-seven thousand, three hundred seventy-three".