161244644156600 has 48 divisors (see below), whose sum is σ = 374895708096600. Its totient is φ = 64497528986240.

The previous prime is 161244644156593. The next prime is 161244644156623. The reversal of 161244644156600 is 6651446442161.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 39374486 + ... + 43276314.

Almost surely, 2^{161244644156600} is an apocalyptic number.

161244644156600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161244644156600 is an abundant number, since it is smaller than the sum of its proper divisors (213651063940000).

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

161244644156600 is a wasteful number, since it uses less digits than its factorization.

161244644156600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108472 (or 4108463 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 161244644156600 in words is "one hundred sixty-one trillion, two hundred forty-four billion, six hundred forty-four million, one hundred fifty-six thousand, six hundred".