133712464721 has 32 divisors (see below), whose sum is σ = 149754562560. Its totient is φ = 118367401600.

The previous prime is 133712464709. The next prime is 133712464771. The reversal of 133712464721 is 127464217331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133712464721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133712464771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29998325 + ... + 30002781.

It is an arithmetic number, because the mean of its divisors is an integer number (4679830080).

Almost surely, 2^133712464721 is an apocalyptic number.

133712464721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133712464721 is a deficient number, since it is larger than the sum of its proper divisors (16042097839).

133712464721 is a wasteful number, since it uses less digits than its factorization.

133712464721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005.

The product of its digits is 169344, while the sum is 41.

The spelling of 133712464721 in words is "one hundred thirty-three billion, seven hundred twelve million, four hundred sixty-four thousand, seven hundred twenty-one".