21433545021304 has 32 divisors (see below), whose sum is σ = 43683752815920. Its totient is φ = 9799953002496.

The previous prime is 21433545021277. The next prime is 21433545021307. The reversal of 21433545021304 is 40312054533412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433545021307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963034569 + ... + 963056824.

Almost surely, 2^{21433545021304} is an apocalyptic number.

It is an amenable number.

21433545021304 is an abundant number, since it is smaller than the sum of its proper divisors (22250207794616).

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

21433545021304 is a wasteful number, since it uses less digits than its factorization.

21433545021304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926091519 (or 1926091515 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 21433545021304 its reverse (40312054533412), we get a palindrome (61745599554716).

The spelling of 21433545021304 in words is "twenty-one trillion, four hundred thirty-three billion, five hundred forty-five million, twenty-one thousand, three hundred four".