131640240764 has 12 divisors (see below), whose sum is σ = 235727873304. Its totient is φ = 64289419824.

The previous prime is 131640240733. The next prime is 131640240769. The reversal of 131640240764 is 467042046131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131640240769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382674947 + ... + 382675290.

It is an arithmetic number, because the mean of its divisors is an integer number (19643989442).

Almost surely, 2^131640240764 is an apocalyptic number.

It is an amenable number.

131640240764 is a deficient number, since it is larger than the sum of its proper divisors (104087632540).

131640240764 is a wasteful number, since it uses less digits than its factorization.

131640240764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765350284 (or 765350282 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

Adding to 131640240764 its reverse (467042046131), we get a palindrome (598682286895).

The spelling of 131640240764 in words is "one hundred thirty-one billion, six hundred forty million, two hundred forty thousand, seven hundred sixty-four".