133451155420 has 192 divisors, whose sum is σ = 320974617600. Its totient is φ = 46162135040.

The previous prime is 133451155367. The next prime is 133451155457. The reversal of 133451155420 is 24551154331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159059361 + ... + 159060199.

It is an arithmetic number, because the mean of its divisors is an integer number (1671742800).

Almost surely, 2^133451155420 is an apocalyptic number.

133451155420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133451155420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160487308800).

133451155420 is an abundant number, since it is smaller than the sum of its proper divisors (187523462180).

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

133451155420 is a wasteful number, since it uses less digits than its factorization.

133451155420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 133451155420 in words is "one hundred thirty-three billion, four hundred fifty-one million, one hundred fifty-five thousand, four hundred twenty".