131440456636 has 12 divisors (see below), whose sum is σ = 235631062800. Its totient is φ = 64117295840.

The previous prime is 131440456583. The next prime is 131440456643. The reversal of 131440456636 is 636654044131.

131440456636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 131440456592 and 131440456601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400732936 + ... + 400733263.

It is an arithmetic number, because the mean of its divisors is an integer number (19635921900).

Almost surely, 2^131440456636 is an apocalyptic number.

It is an amenable number.

131440456636 is a deficient number, since it is larger than the sum of its proper divisors (104190606164).

131440456636 is a wasteful number, since it uses less digits than its factorization.

131440456636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801466244 (or 801466242 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 131440456636 in words is "one hundred thirty-one billion, four hundred forty million, four hundred fifty-six thousand, six hundred thirty-six".