133909111623 has 16 divisors (see below), whose sum is σ = 209566899200. Its totient is φ = 74451397536.

The previous prime is 133909111621. The next prime is 133909111649. The reversal of 133909111623 is 326111909331.

It is not a de Polignac number, because 133909111623 - 2¹ = 133909111621 is a prime.

It is a super-2 number, since 2×133909111623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133909111621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86169823 + ... + 86171376.

It is an arithmetic number, because the mean of its divisors is an integer number (13097931200).

Almost surely, 2^133909111623 is an apocalyptic number.

133909111623 is a deficient number, since it is larger than the sum of its proper divisors (75657787577).

133909111623 is a wasteful number, since it uses less digits than its factorization.

133909111623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172341246.

The product of its (nonzero) digits is 26244, while the sum is 39.

The spelling of 133909111623 in words is "one hundred thirty-three billion, nine hundred nine million, one hundred eleven thousand, six hundred twenty-three".