161100100 has 36 divisors (see below), whose sum is σ = 399529984. Its totient is φ = 55234080.

The previous prime is 161100097. The next prime is 161100103. The reversal of 161100100 is 1001161.

It is an interprime number because it is at equal distance from previous prime (161100097) and next prime (161100103).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (161100103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114372 + ... + 115771.

Almost surely, 2^161100100 is an apocalyptic number.

161100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161100100 is an abundant number, since it is smaller than the sum of its proper divisors (238429884).

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

161100100 is a wasteful number, since it uses less digits than its factorization.

161100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230164 (or 230157 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 161100100 is about 12692.5214201119. The cubic root of 161100100 is about 544.1249037374.

Adding to 161100100 its reverse (1001161), we get a palindrome (162101261).

The spelling of 161100100 in words is "one hundred sixty-one million, one hundred thousand, one hundred".