161663676259990 has 8 divisors (see below), whose sum is σ = 290994617268000. Its totient is φ = 64665470503992.

The previous prime is 161663676259961. The next prime is 161663676259991. The reversal of 161663676259990 is 99952676366161.

161663676259990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161663676259990² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161663676259991) 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 3 ways as a sum of consecutive naturals, for example, 8083183812990 + ... + 8083183813009.

It is an arithmetic number, because the mean of its divisors is an integer number (36374327158500).

Almost surely, 2^{161663676259990} is an apocalyptic number.

161663676259990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161663676259990 is a deficient number, since it is larger than the sum of its proper divisors (129330941008010).

161663676259990 is a wasteful number, since it uses less digits than its factorization.

161663676259990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16166367626006.

The product of its (nonzero) digits is 1190427840, while the sum is 76.

The spelling of 161663676259990 in words is "one hundred sixty-one trillion, six hundred sixty-three billion, six hundred seventy-six million, two hundred fifty-nine thousand, nine hundred ninety".