131506577563 has 8 divisors (see below), whose sum is σ = 132191924832. Its totient is φ = 130821410496.

The previous prime is 131506577549. The next prime is 131506577597. The reversal of 131506577563 is 365775605131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131506577563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131506577533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568031 + ... + 1649767.

It is an arithmetic number, because the mean of its divisors is an integer number (16523990604).

Almost surely, 2^131506577563 is an apocalyptic number.

131506577563 is a deficient number, since it is larger than the sum of its proper divisors (685347269).

131506577563 is an equidigital number, since it uses as much as digits as its factorization.

131506577563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90101.

The product of its (nonzero) digits is 1984500, while the sum is 49.

The spelling of 131506577563 in words is "one hundred thirty-one billion, five hundred six million, five hundred seventy-seven thousand, five hundred sixty-three".