161155468628712 has 192 divisors, whose sum is σ = 468772232947200. Its totient is φ = 49902890365440.

The previous prime is 161155468628669. The next prime is 161155468628717. The reversal of 161155468628712 is 217826864551161.

161155468628712 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 5 + 546 + 8 + 6 + 2 + 87 + 1 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 161155468628712.

It is not an unprimeable number, because it can be changed into a prime (161155468628717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4002183 + ... + 18393705.

It is an arithmetic number, because the mean of its divisors is an integer number (2441522046600).

Almost surely, 2^{161155468628712} is an apocalyptic number.

161155468628712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161155468628712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234386116473600).

161155468628712 is an abundant number, since it is smaller than the sum of its proper divisors (307616764318488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161155468628712 is a wasteful number, since it uses less digits than its factorization.

161155468628712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14391768 (or 14391761 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 161155468628712 in words is "one hundred sixty-one trillion, one hundred fifty-five billion, four hundred sixty-eight million, six hundred twenty-eight thousand, seven hundred twelve".