131127505166 has 12 divisors (see below), whose sum is σ = 228804116328. Its totient is φ = 56197502172.

The previous prime is 131127505121. The next prime is 131127505189. The reversal of 131127505166 is 661505721131.

It is a happy number.

It is a super-2 number, since 2×131127505166² (a number of 23 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 5 ways as a sum of consecutive naturals, for example, 669017786 + ... + 669017981.

It is an arithmetic number, because the mean of its divisors is an integer number (19067009694).

Almost surely, 2^131127505166 is an apocalyptic number.

131127505166 is a deficient number, since it is larger than the sum of its proper divisors (97676611162).

131127505166 is a wasteful number, since it uses less digits than its factorization.

131127505166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338035783 (or 1338035776 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 131127505166 in words is "one hundred thirty-one billion, one hundred twenty-seven million, five hundred five thousand, one hundred sixty-six".