4521220451040 has 48 divisors (see below), whose sum is σ = 14241844422288. Its totient is φ = 1205658786816.

The previous prime is 4521220451003. The next prime is 4521220451051. The reversal of 4521220451040 is 401540221254.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4521220450989 and 4521220451007.

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, 4709604157 + ... + 4709605116.

It is an arithmetic number, because the mean of its divisors is an integer number (296705092131).

Almost surely, 2^{4521220451040} is an apocalyptic number.

4521220451040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4521220451040 is an abundant number, since it is smaller than the sum of its proper divisors (9720623971248).

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

4521220451040 is a wasteful number, since it uses less digits than its factorization.

4521220451040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9419209291 (or 9419209283 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 4521220451040 its reverse (401540221254), we get a palindrome (4922760672294).

The spelling of 4521220451040 in words is "four trillion, five hundred twenty-one billion, two hundred twenty million, four hundred fifty-one thousand, forty".