133568353974 has 96 divisors (see below), whose sum is σ = 310971790080. Its totient is φ = 38137302720.

The previous prime is 133568353879. The next prime is 133568354027. The reversal of 133568353974 is 479353865331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1059072 + ... + 1178460.

It is an arithmetic number, because the mean of its divisors is an integer number (3239289480).

Almost surely, 2^133568353974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133568353974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155485895040).

133568353974 is an abundant number, since it is smaller than the sum of its proper divisors (177403436106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133568353974 is a wasteful number, since it uses less digits than its factorization.

133568353974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119506 (or 119495 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 57.

The spelling of 133568353974 in words is "one hundred thirty-three billion, five hundred sixty-eight million, three hundred fifty-three thousand, nine hundred seventy-four".