161464515425136 has 640 divisors, whose sum is σ = 603489717043200. Its totient is φ = 40079281904640.

The previous prime is 161464515425041. The next prime is 161464515425167. The reversal of 161464515425136 is 631524515464161.

161464515425136 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 6 + 4 + 515 + 42 + 51 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 854490955 + ... + 854679893.

It is an arithmetic number, because the mean of its divisors is an integer number (942952682880).

Almost surely, 2^{161464515425136} is an apocalyptic number.

161464515425136 is a gapful number since it is divisible by the number (16) 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 161464515425136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301744858521600).

161464515425136 is an abundant number, since it is smaller than the sum of its proper divisors (442025201618064).

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

161464515425136 is a wasteful number, since it uses less digits than its factorization.

161464515425136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190114 (or 190102 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 54.

The spelling of 161464515425136 in words is "one hundred sixty-one trillion, four hundred sixty-four billion, five hundred fifteen million, four hundred twenty-five thousand, one hundred thirty-six".