133621886513 has 4 divisors (see below), whose sum is σ = 134255165808. Its totient is φ = 132988607220.

The previous prime is 133621886491. The next prime is 133621886551. The reversal of 133621886513 is 315688126331.

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 133621886513 - 2⁸ = 133621886257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133621846513) 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, 316639331 + ... + 316639752.

It is an arithmetic number, because the mean of its divisors is an integer number (33563791452).

Almost surely, 2^133621886513 is an apocalyptic number.

It is an amenable number.

133621886513 is a deficient number, since it is larger than the sum of its proper divisors (633279295).

133621886513 is an equidigital number, since it uses as much as digits as its factorization.

133621886513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633279294.

The product of its digits is 622080, while the sum is 47.

The spelling of 133621886513 in words is "one hundred thirty-three billion, six hundred twenty-one million, eight hundred eighty-six thousand, five hundred thirteen".