131528641975 has 6 divisors (see below), whose sum is σ = 163095516080. Its totient is φ = 105222913560.

The previous prime is 131528641973. The next prime is 131528641999. The reversal of 131528641975 is 579146825131.

It is not a de Polignac number, because 131528641975 - 2¹ = 131528641973 is a prime.

It is a super-4 number, since 4×131528641975⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131528641973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2630572815 + ... + 2630572864.

Almost surely, 2^131528641975 is an apocalyptic number.

131528641975 is a deficient number, since it is larger than the sum of its proper divisors (31566874105).

131528641975 is an equidigital number, since it uses as much as digits as its factorization.

131528641975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5261145689 (or 5261145684 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 52.

The spelling of 131528641975 in words is "one hundred thirty-one billion, five hundred twenty-eight million, six hundred forty-one thousand, nine hundred seventy-five".