161233241770944 has 504 divisors, whose sum is σ = 558185747857920. Its totient is φ = 46010757348864.

The previous prime is 161233241770919. The next prime is 161233241771029. The reversal of 161233241770944 is 449077142332161.

161233241770944 is a `hidden beast` number, since 1 + 6 + 123 + 32 + 417 + 70 + 9 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a super-2 number, since 2×161233241770944² (a number of 29 digits) contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 630085777 + ... + 630341615.

It is an arithmetic number, because the mean of its divisors is an integer number (1107511404480).

Almost surely, 2^{161233241770944} is an apocalyptic number.

161233241770944 is a gapful number since it is divisible by the number (14) 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 161233241770944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279092873928960).

161233241770944 is an abundant number, since it is smaller than the sum of its proper divisors (396952506086976).

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

161233241770944 is an equidigital number, since it uses as much as digits as its factorization.

161233241770944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256707 (or 256678 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 161233241770944 in words is "one hundred sixty-one trillion, two hundred thirty-three billion, two hundred forty-one million, seven hundred seventy thousand, nine hundred forty-four".