161677936357 has 8 divisors (see below), whose sum is σ = 186501652416. Its totient is φ = 137285937312.

The previous prime is 161677936333. The next prime is 161677936391. The reversal of 161677936357 is 753639776161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161677936357 - 2¹⁹ = 161677412069 is a prime.

It is a super-2 number, since 2×161677936357² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161677936295 and 161677936304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161677936307) 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 in 7 ways as a sum of consecutive naturals, for example, 107928448 + ... + 107929945.

It is an arithmetic number, because the mean of its divisors is an integer number (23312706552).

Almost surely, 2^161677936357 is an apocalyptic number.

It is an amenable number.

161677936357 is a deficient number, since it is larger than the sum of its proper divisors (24823716059).

161677936357 is a wasteful number, since it uses less digits than its factorization.

161677936357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215858507.

The product of its digits is 30005640, while the sum is 61.

The spelling of 161677936357 in words is "one hundred sixty-one billion, six hundred seventy-seven million, nine hundred thirty-six thousand, three hundred fifty-seven".