131552117521 has 16 divisors (see below), whose sum is σ = 151108286400. Its totient is φ = 113265734400.

The previous prime is 131552117497. The next prime is 131552117527. The reversal of 131552117521 is 125711255131.

It is a cyclic number.

It is not a de Polignac number, because 131552117521 - 2¹⁹ = 131551593233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131552117527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648381 + ... + 826741.

It is an arithmetic number, because the mean of its divisors is an integer number (9444267900).

Almost surely, 2^131552117521 is an apocalyptic number.

131552117521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131552117521 is a deficient number, since it is larger than the sum of its proper divisors (19556168879).

131552117521 is a wasteful number, since it uses less digits than its factorization.

131552117521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181920.

The product of its digits is 10500, while the sum is 34.

The spelling of 131552117521 in words is "one hundred thirty-one billion, five hundred fifty-two million, one hundred seventeen thousand, five hundred twenty-one".