131784898976639 has 4 divisors (see below), whose sum is σ = 131885729046024. Its totient is φ = 131684068907256.

The previous prime is 131784898976617. The next prime is 131784898976669. The reversal of 131784898976639 is 936679898487131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131784898976639 - 2⁸ = 131784898976383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131784898976669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50415032732 + ... + 50415035345.

It is an arithmetic number, because the mean of its divisors is an integer number (32971432261506).

Almost surely, 2^{131784898976639} is an apocalyptic number.

131784898976639 is a deficient number, since it is larger than the sum of its proper divisors (100830069385).

131784898976639 is a wasteful number, since it uses less digits than its factorization.

131784898976639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100830069384.

The product of its digits is 23702740992, while the sum is 89.

The spelling of 131784898976639 in words is "one hundred thirty-one trillion, seven hundred eighty-four billion, eight hundred ninety-eight million, nine hundred seventy-six thousand, six hundred thirty-nine".