161357106255 has 16 divisors (see below), whose sum is σ = 258176433120. Its totient is φ = 86055435648.

The previous prime is 161357106223. The next prime is 161357106271. The reversal of 161357106255 is 552601753161.

It is not a de Polignac number, because 161357106255 - 2⁵ = 161357106223 is a prime.

It is a super-3 number, since 3×161357106255³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231689 + ... + 1356381.

It is an arithmetic number, because the mean of its divisors is an integer number (16136027070).

Almost surely, 2^161357106255 is an apocalyptic number.

161357106255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161357106255 is a deficient number, since it is larger than the sum of its proper divisors (96819326865).

161357106255 is a wasteful number, since it uses less digits than its factorization.

161357106255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210970.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 161357106255 in words is "one hundred sixty-one billion, three hundred fifty-seven million, one hundred six thousand, two hundred fifty-five".