133987644331599 has 8 divisors (see below), whose sum is σ = 178655571822592. Its totient is φ = 89322406530840.

The previous prime is 133987644331559. The next prime is 133987644331621. The reversal of 133987644331599 is 995133446789331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133987644331599 - 2⁹ = 133987644331087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133987644331599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133987644331559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672306319 + ... + 672505584.

It is an arithmetic number, because the mean of its divisors is an integer number (22331946477824).

Almost surely, 2^{133987644331599} is an apocalyptic number.

133987644331599 is a deficient number, since it is larger than the sum of its proper divisors (44667927490993).

133987644331599 is a wasteful number, since it uses less digits than its factorization.

133987644331599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344845117.

The product of its digits is 1587237120, while the sum is 75.

The spelling of 133987644331599 in words is "one hundred thirty-three trillion, nine hundred eighty-seven billion, six hundred forty-four million, three hundred thirty-one thousand, five hundred ninety-nine".