133426191720 has 32 divisors (see below), whose sum is σ = 400278575520. Its totient is φ = 35580317760.

The previous prime is 133426191709. The next prime is 133426191739. The reversal of 133426191720 is 27191624331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555942346 + ... + 555942585.

It is an arithmetic number, because the mean of its divisors is an integer number (12508705485).

Almost surely, 2^133426191720 is an apocalyptic number.

133426191720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133426191720 is an abundant number, since it is smaller than the sum of its proper divisors (266852383800).

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

133426191720 is a wasteful number, since it uses less digits than its factorization.

133426191720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111884945 (or 1111884941 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 133426191720 in words is "one hundred thirty-three billion, four hundred twenty-six million, one hundred ninety-one thousand, seven hundred twenty".