161336177374968 has 48 divisors (see below), whose sum is σ = 443106402663600. Its totient is φ = 53021278947840.

The previous prime is 161336177374873. The next prime is 161336177374991. The reversal of 161336177374968 is 869473771633161.

It is a happy number.

161336177374968 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 3 + 61 + 7 + 73 + 7 + 496 + 8 = 666.

It is a super-3 number, since 3×161336177374968³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 161336177374896 and 161336177374905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15780137433 + ... + 15780147656.

It is an arithmetic number, because the mean of its divisors is an integer number (9231383388825).

Almost surely, 2^{161336177374968} is an apocalyptic number.

161336177374968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

161336177374968 is an abundant number, since it is smaller than the sum of its proper divisors (281770225288632).

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

161336177374968 is a wasteful number, since it uses less digits than its factorization.

161336177374968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31560285172 (or 31560285165 counting only the distinct ones).

The product of its digits is 576108288, while the sum is 72.

The spelling of 161336177374968 in words is "one hundred sixty-one trillion, three hundred thirty-six billion, one hundred seventy-seven million, three hundred seventy-four thousand, nine hundred sixty-eight".