131026600646 has 4 divisors (see below), whose sum is σ = 196539900972. Its totient is φ = 65513300322.

The previous prime is 131026600633. The next prime is 131026600687. The reversal of 131026600646 is 646006620131.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 32756650160 + ... + 32756650163.

It is an arithmetic number, because the mean of its divisors is an integer number (49134975243).

Almost surely, 2^131026600646 is an apocalyptic number.

131026600646 is a deficient number, since it is larger than the sum of its proper divisors (65513300326).

131026600646 is an equidigital number, since it uses as much as digits as its factorization.

131026600646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65513300325.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 131026600646 in words is "one hundred thirty-one billion, twenty-six million, six hundred thousand, six hundred forty-six".