45121200203440 has 80 divisors (see below), whose sum is σ = 105221193412608. Its totient is φ = 17994459080448.

The previous prime is 45121200203407. The next prime is 45121200203441. The reversal of 45121200203440 is 4430200212154.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 45121200203399 and 45121200203408.

It is not an unprimeable number, because it can be changed into a prime (45121200203441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40869729 + ... + 41959231.

Almost surely, 2^{45121200203440} is an apocalyptic number.

45121200203440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45121200203440 is an abundant number, since it is smaller than the sum of its proper divisors (60099993209168).

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

45121200203440 is a wasteful number, since it uses less digits than its factorization.

45121200203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091066 (or 1091060 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 45121200203440 its reverse (4430200212154), we get a palindrome (49551400415594).

The spelling of 45121200203440 in words is "forty-five trillion, one hundred twenty-one billion, two hundred million, two hundred three thousand, four hundred forty".