161696998833480 has 384 divisors, whose sum is σ = 582736296954240. Its totient is φ = 38553435648000.

The previous prime is 161696998833443. The next prime is 161696998833511. The reversal of 161696998833480 is 84338899696161.

161696998833480 is a `hidden beast` number, since 1 + 6 + 1 + 69 + 69 + 98 + 8 + 334 + 80 = 666.

It is a super-2 number, since 2×161696998833480² (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 161696998833480.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 4176794604 + ... + 4176833316.

It is an arithmetic number, because the mean of its divisors is an integer number (1517542439985).

Almost surely, 2^{161696998833480} is an apocalyptic number.

161696998833480 is a gapful number since it is divisible by the number (10) 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 161696998833480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291368148477120).

161696998833480 is an abundant number, since it is smaller than the sum of its proper divisors (421039298120760).

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

161696998833480 is a wasteful number, since it uses less digits than its factorization.

161696998833480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56093 (or 56086 counting only the distinct ones).

The product of its (nonzero) digits is 2902376448, while the sum is 81.

The spelling of 161696998833480 in words is "one hundred sixty-one trillion, six hundred ninety-six billion, nine hundred ninety-eight million, eight hundred thirty-three thousand, four hundred eighty".