131781554622764 has 24 divisors (see below), whose sum is σ = 239337162136800. Its totient is φ = 63414119847680.

The previous prime is 131781554622763. The next prime is 131781554622769. The reversal of 131781554622764 is 467226455187131.

It is a junction number, because it is equal to n+sod(n) for n = 131781554622697 and 131781554622706.

It is not an unprimeable number, because it can be changed into a prime (131781554622763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1826407469 + ... + 1826479620.

It is an arithmetic number, because the mean of its divisors is an integer number (9972381755700).

Almost surely, 2^{131781554622764} is an apocalyptic number.

It is an amenable number.

131781554622764 is a deficient number, since it is larger than the sum of its proper divisors (107555607514036).

131781554622764 is a wasteful number, since it uses less digits than its factorization.

131781554622764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652887433 (or 3652887431 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 62.

The spelling of 131781554622764 in words is "one hundred thirty-one trillion, seven hundred eighty-one billion, five hundred fifty-four million, six hundred twenty-two thousand, seven hundred sixty-four".