133540621172 has 24 divisors (see below), whose sum is σ = 278693471616. Its totient is φ = 54743359968.

The previous prime is 133540621139. The next prime is 133540621183. The reversal of 133540621172 is 271126045331.

It is a super-2 number, since 2×133540621172² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103679963 + ... + 103681250.

It is an arithmetic number, because the mean of its divisors is an integer number (11612227984).

Almost surely, 2^133540621172 is an apocalyptic number.

It is an amenable number.

133540621172 is an abundant number, since it is smaller than the sum of its proper divisors (145152850444).

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

133540621172 is a wasteful number, since it uses less digits than its factorization.

133540621172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207361247 (or 207361245 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 133540621172 in words is "one hundred thirty-three billion, five hundred forty million, six hundred twenty-one thousand, one hundred seventy-two".