45404421253520 has 40 divisors (see below), whose sum is σ = 120646033617984. Its totient is φ = 15567230143872.

The previous prime is 45404421253507. The next prime is 45404421253523. The reversal of 45404421253520 is 2535212440454.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×45404421253520² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45404421253523) 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, 40539661274 + ... + 40539662393.

Almost surely, 2^{45404421253520} is an apocalyptic number.

45404421253520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45404421253520 is an abundant number, since it is smaller than the sum of its proper divisors (75241612364464).

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

45404421253520 is a wasteful number, since it uses less digits than its factorization.

45404421253520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81079323687 (or 81079323681 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 45404421253520 its reverse (2535212440454), we get a palindrome (47939633693974).

The spelling of 45404421253520 in words is "forty-five trillion, four hundred four billion, four hundred twenty-one million, two hundred fifty-three thousand, five hundred twenty".