133021420544 has 88 divisors (see below), whose sum is σ = 281482314960. Its totient is φ = 62723211264.

The previous prime is 133021420537. The next prime is 133021420559. The reversal of 133021420544 is 445024120331.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 1224842 + ... + 1329014.

It is an arithmetic number, because the mean of its divisors is an integer number (3198662670).

Almost surely, 2^133021420544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133021420544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140741157480).

133021420544 is an abundant number, since it is smaller than the sum of its proper divisors (148460894416).

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

133021420544 is a wasteful number, since it uses less digits than its factorization.

133021420544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104265 (or 104247 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 133021420544 its reverse (445024120331), we get a palindrome (578045540875).

The spelling of 133021420544 in words is "one hundred thirty-three billion, twenty-one million, four hundred twenty thousand, five hundred forty-four".