21333426433140 has 24 divisors (see below), whose sum is σ = 59733594012960. Its totient is φ = 5688913715488.

The previous prime is 21333426433009. The next prime is 21333426433159. The reversal of 21333426433140 is 4133462433312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177778553550 + ... + 177778553669.

It is an arithmetic number, because the mean of its divisors is an integer number (2488899750540).

Almost surely, 2^{21333426433140} is an apocalyptic number.

21333426433140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333426433140 is an abundant number, since it is smaller than the sum of its proper divisors (38400167579820).

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

21333426433140 is a wasteful number, since it uses less digits than its factorization.

21333426433140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355557107231 (or 355557107229 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 39.

Adding to 21333426433140 its reverse (4133462433312), we get a palindrome (25466888866452).

The spelling of 21333426433140 in words is "twenty-one trillion, three hundred thirty-three billion, four hundred twenty-six million, four hundred thirty-three thousand, one hundred forty".