133713555261 has 48 divisors (see below), whose sum is σ = 210956544000. Its totient is φ = 74679658560.

The previous prime is 133713555229. The next prime is 133713555289. The reversal of 133713555261 is 162555317331.

It is not a de Polignac number, because 133713555261 - 2⁵ = 133713555229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133713555211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3365490 + ... + 3404988.

It is an arithmetic number, because the mean of its divisors is an integer number (4394928000).

Almost surely, 2^133713555261 is an apocalyptic number.

133713555261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133713555261 is a deficient number, since it is larger than the sum of its proper divisors (77242988739).

133713555261 is a wasteful number, since it uses less digits than its factorization.

133713555261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40146 (or 40133 counting only the distinct ones).

The product of its digits is 283500, while the sum is 42.

The spelling of 133713555261 in words is "one hundred thirty-three billion, seven hundred thirteen million, five hundred fifty-five thousand, two hundred sixty-one".