161167356672 has 216 divisors, whose sum is σ = 500779811952. Its totient is φ = 45880934400.

The previous prime is 161167356629. The next prime is 161167356731. The reversal of 161167356672 is 276653761161.

It is a super-3 number, since 3×161167356672³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10566972 + ... + 10582212.

Almost surely, 2^161167356672 is an apocalyptic number.

161167356672 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 161167356672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250389905976).

161167356672 is an abundant number, since it is smaller than the sum of its proper divisors (339612455280).

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

161167356672 is a wasteful number, since it uses less digits than its factorization.

161167356672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555 (or 15534 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The spelling of 161167356672 in words is "one hundred sixty-one billion, one hundred sixty-seven million, three hundred fifty-six thousand, six hundred seventy-two".