133720456855 has 4 divisors (see below), whose sum is σ = 160464548232. Its totient is φ = 106976365480.

The previous prime is 133720456853. The next prime is 133720456897. The reversal of 133720456855 is 558654027331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 133720456855 - 2¹ = 133720456853 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133720456799 and 133720456808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133720456853) 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, 13372045681 + ... + 13372045690.

It is an arithmetic number, because the mean of its divisors is an integer number (40116137058).

Almost surely, 2^133720456855 is an apocalyptic number.

133720456855 is a deficient number, since it is larger than the sum of its proper divisors (26744091377).

133720456855 is an equidigital number, since it uses as much as digits as its factorization.

133720456855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26744091376.

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 133720456855 in words is "one hundred thirty-three billion, seven hundred twenty million, four hundred fifty-six thousand, eight hundred fifty-five".