131889686451 has 4 divisors (see below), whose sum is σ = 175852915272. Its totient is φ = 87926457632.

The previous prime is 131889686449. The next prime is 131889686483. The reversal of 131889686451 is 154686988131.

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 131889686451 - 2¹ = 131889686449 is a prime.

It is a super-3 number, since 3×131889686451³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131889686491) 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, 21981614406 + ... + 21981614411.

It is an arithmetic number, because the mean of its divisors is an integer number (43963228818).

Almost surely, 2^131889686451 is an apocalyptic number.

131889686451 is a deficient number, since it is larger than the sum of its proper divisors (43963228821).

131889686451 is an equidigital number, since it uses as much as digits as its factorization.

131889686451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43963228820.

The product of its digits is 9953280, while the sum is 60.

The spelling of 131889686451 in words is "one hundred thirty-one billion, eight hundred eighty-nine million, six hundred eighty-six thousand, four hundred fifty-one".