133773006261 has 12 divisors (see below), whose sum is σ = 180538891328. Its totient is φ = 88107508584.

The previous prime is 133773006223. The next prime is 133773006271. The reversal of 133773006261 is 162600377331.

It is a happy number.

It is not a de Polignac number, because 133773006261 - 2⁶ = 133773006197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133773006271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3215725 + ... + 3257058.

Almost surely, 2^133773006261 is an apocalyptic number.

It is an amenable number.

133773006261 is a deficient number, since it is larger than the sum of its proper divisors (46765885067).

133773006261 is an frugal number, since it uses more digits than its factorization.

133773006261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472952 (or 6472869 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 39.

The spelling of 133773006261 in words is "one hundred thirty-three billion, seven hundred seventy-three million, six thousand, two hundred sixty-one".