131533829680 has 80 divisors (see below), whose sum is σ = 348122790144. Its totient is φ = 45750890240.

The previous prime is 131533829633. The next prime is 131533829689. The reversal of 131533829680 is 86928335131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×131533829680² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131533829689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3229114 + ... + 3269593.

Almost surely, 2^131533829680 is an apocalyptic number.

131533829680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131533829680 is an abundant number, since it is smaller than the sum of its proper divisors (216588960464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131533829680 is a wasteful number, since it uses less digits than its factorization.

131533829680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6498754 (or 6498748 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 131533829680 in words is "one hundred thirty-one billion, five hundred thirty-three million, eight hundred twenty-nine thousand, six hundred eighty".