131552505537 has 4 divisors (see below), whose sum is σ = 175403340720. Its totient is φ = 87701670356.

The previous prime is 131552505523. The next prime is 131552505599. The reversal of 131552505537 is 735505255131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131552505537 - 2⁴ = 131552505521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131552505437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21925417587 + ... + 21925417592.

It is an arithmetic number, because the mean of its divisors is an integer number (43850835180).

Almost surely, 2^131552505537 is an apocalyptic number.

It is an amenable number.

131552505537 is a deficient number, since it is larger than the sum of its proper divisors (43850835183).

131552505537 is an equidigital number, since it uses as much as digits as its factorization.

131552505537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43850835182.

The product of its (nonzero) digits is 393750, while the sum is 42.

The spelling of 131552505537 in words is "one hundred thirty-one billion, five hundred fifty-two million, five hundred five thousand, five hundred thirty-seven".