131649678809 has 8 divisors (see below), whose sum is σ = 143636213952. Its totient is φ = 119666207440.

The previous prime is 131649678803. The next prime is 131649678889. The reversal of 131649678809 is 908876946131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131649678809 - 2⁸ = 131649678553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131649678803) 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, 675629 + ... + 848394.

It is an arithmetic number, because the mean of its divisors is an integer number (17954526744).

Almost surely, 2^131649678809 is an apocalyptic number.

It is an amenable number.

131649678809 is a deficient number, since it is larger than the sum of its proper divisors (11986535143).

131649678809 is a wasteful number, since it uses less digits than its factorization.

131649678809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531887.

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 131649678809 in words is "one hundred thirty-one billion, six hundred forty-nine million, six hundred seventy-eight thousand, eight hundred nine".