133533970637 has 4 divisors (see below), whose sum is σ = 133559503296. Its totient is φ = 133508437980.

The previous prime is 133533970571. The next prime is 133533970643. The reversal of 133533970637 is 736079335331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133533970637 - 2¹⁶ = 133533905101 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 (133533975637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12758483 + ... + 12768944.

It is an arithmetic number, because the mean of its divisors is an integer number (33389875824).

Almost surely, 2^133533970637 is an apocalyptic number.

It is an amenable number.

133533970637 is a deficient number, since it is larger than the sum of its proper divisors (25532659).

133533970637 is an equidigital number, since it uses as much as digits as its factorization.

133533970637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25532658.

The product of its (nonzero) digits is 3214890, while the sum is 50.

The spelling of 133533970637 in words is "one hundred thirty-three billion, five hundred thirty-three million, nine hundred seventy thousand, six hundred thirty-seven".