133894537994 has 8 divisors (see below), whose sum is σ = 229533493728. Its totient is φ = 57383373420.

The previous prime is 133894537967. The next prime is 133894538003. The reversal of 133894537994 is 499735498331.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133894537994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4781947772 + ... + 4781947799.

It is an arithmetic number, because the mean of its divisors is an integer number (28691686716).

Almost surely, 2^133894537994 is an apocalyptic number.

133894537994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

133894537994 is a deficient number, since it is larger than the sum of its proper divisors (95638955734).

133894537994 is an equidigital number, since it uses as much as digits as its factorization.

133894537994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9563895580.

The product of its digits is 88179840, while the sum is 65.

The spelling of 133894537994 in words is "one hundred thirty-three billion, eight hundred ninety-four million, five hundred thirty-seven thousand, nine hundred ninety-four".