161611100500110 has 64 divisors (see below), whose sum is σ = 394052065704000. Its totient is φ = 42414331180032.

The previous prime is 161611100500067. The next prime is 161611100500153. The reversal of 161611100500110 is 11005001116161.

It is an interprime number because it is at equal distance from previous prime (161611100500067) and next prime (161611100500153).

It is a super-2 number, since 2×161611100500110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165359599 + ... + 166334058.

It is an arithmetic number, because the mean of its divisors is an integer number (6157063526625).

Almost surely, 2^{161611100500110} is an apocalyptic number.

161611100500110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161611100500110 is an abundant number, since it is smaller than the sum of its proper divisors (232440965203890).

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

161611100500110 is a wasteful number, since it uses less digits than its factorization.

161611100500110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331693925.

The product of its (nonzero) digits is 180, while the sum is 24.

Adding to 161611100500110 its reverse (11005001116161), we get a palindrome (172616101616271).

The spelling of 161611100500110 in words is "one hundred sixty-one trillion, six hundred eleven billion, one hundred million, five hundred thousand, one hundred ten".