131101566164 has 24 divisors (see below), whose sum is σ = 236080891368. Its totient is φ = 63656686080.

The previous prime is 131101566121. The next prime is 131101566179. The reversal of 131101566164 is 461665101131.

It can be written as a sum of positive squares in 4 ways, for example, as 7725003664 + 123376562500 = 87892^2 + 351250^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773009 + ... + 927224.

It is an arithmetic number, because the mean of its divisors is an integer number (9836703807).

Almost surely, 2^131101566164 is an apocalyptic number.

It is an amenable number.

131101566164 is a deficient number, since it is larger than the sum of its proper divisors (104979325204).

131101566164 is a wasteful number, since it uses less digits than its factorization.

131101566164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700795 (or 1700793 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

Adding to 131101566164 its reverse (461665101131), we get a palindrome (592766667295).

The spelling of 131101566164 in words is "one hundred thirty-one billion, one hundred one million, five hundred sixty-six thousand, one hundred sixty-four".