133551265621020 has 48 divisors (see below), whose sum is σ = 402708431721120. Its totient is φ = 32874157691136.

The previous prime is 133551265621019. The next prime is 133551265621049. The reversal of 133551265621020 is 20126562155331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85609784875 + ... + 85609786434.

It is an arithmetic number, because the mean of its divisors is an integer number (8389758994190).

Almost surely, 2^{133551265621020} is an apocalyptic number.

133551265621020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133551265621020 is an abundant number, since it is smaller than the sum of its proper divisors (269157166100100).

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

133551265621020 is a wasteful number, since it uses less digits than its factorization.

133551265621020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171219571334 (or 171219571332 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 133551265621020 in words is "one hundred thirty-three trillion, five hundred fifty-one billion, two hundred sixty-five million, six hundred twenty-one thousand, twenty".