4521320918044 has 48 divisors (see below), whose sum is σ = 9133712824320. Its totient is φ = 1918200225600.

The previous prime is 4521320918039. The next prime is 4521320918057. The reversal of 4521320918044 is 4408190231254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17025717 + ... + 17289235.

It is an arithmetic number, because the mean of its divisors is an integer number (190285683840).

Almost surely, 2^{4521320918044} is an apocalyptic number.

It is an amenable number.

4521320918044 is an abundant number, since it is smaller than the sum of its proper divisors (4612391906276).

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

4521320918044 is a wasteful number, since it uses less digits than its factorization.

4521320918044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269698 (or 269696 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 4521320918044 in words is "four trillion, five hundred twenty-one billion, three hundred twenty million, nine hundred eighteen thousand, forty-four".