131920225545 has 16 divisors (see below), whose sum is σ = 211078376640. Its totient is φ = 70355448384.

The previous prime is 131920225543. The next prime is 131920225559. The reversal of 131920225545 is 545522029131.

It is not a de Polignac number, because 131920225545 - 2¹ = 131920225543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131920225543) 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, 528571 + ... + 737039.

It is an arithmetic number, because the mean of its divisors is an integer number (13192398540).

Almost surely, 2^131920225545 is an apocalyptic number.

131920225545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131920225545 is a deficient number, since it is larger than the sum of its proper divisors (79158151095).

131920225545 is a wasteful number, since it uses less digits than its factorization.

131920225545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250664.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 131920225545 in words is "one hundred thirty-one billion, nine hundred twenty million, two hundred twenty-five thousand, five hundred forty-five".