161656015056150 has 48 divisors (see below), whose sum is σ = 400909215757248. Its totient is φ = 43108023540000.

The previous prime is 161656015056149. The next prime is 161656015056157. The reversal of 161656015056150 is 51650510656161.

It is a super-2 number, since 2×161656015056150² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161656015056150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161656015056157) 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 23 ways as a sum of consecutive naturals, for example, 23948205 + ... + 29947095.

It is an arithmetic number, because the mean of its divisors is an integer number (8352275328276).

Almost surely, 2^{161656015056150} is an apocalyptic number.

161656015056150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161656015056150 is an abundant number, since it is smaller than the sum of its proper divisors (239253200701098).

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

161656015056150 is a wasteful number, since it uses less digits than its factorization.

161656015056150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178557 (or 6178552 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 161656015056150 in words is "one hundred sixty-one trillion, six hundred fifty-six billion, fifteen million, fifty-six thousand, one hundred fifty".