161101656510 has 32 divisors (see below), whose sum is σ = 409387740192. Its totient is φ = 40433356800.

The previous prime is 161101656467. The next prime is 161101656533. The reversal of 161101656510 is 15656101161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157942291 + ... + 157943310.

It is an arithmetic number, because the mean of its divisors is an integer number (12793366881).

Almost surely, 2^161101656510 is an apocalyptic number.

161101656510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161101656510 is an abundant number, since it is smaller than the sum of its proper divisors (248286083682).

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

161101656510 is a wasteful number, since it uses less digits than its factorization.

161101656510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315885628.

The product of its (nonzero) digits is 5400, while the sum is 33.

Adding to 161101656510 its reverse (15656101161), we get a palindrome (176757757671).

The spelling of 161101656510 in words is "one hundred sixty-one billion, one hundred one million, six hundred fifty-six thousand, five hundred ten".