4520397538944 has 384 divisors, whose sum is σ = 15503048870400. Its totient is φ = 1284315761664.

The previous prime is 4520397538931. The next prime is 4520397538949. The reversal of 4520397538944 is 4498357930254.

4520397538944 is a `hidden beast` number, since 4 + 5 + 2 + 0 + 3 + 9 + 7 + 538 + 94 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (4520397538949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38915319 + ... + 39031305.

It is an arithmetic number, because the mean of its divisors is an integer number (40372523100).

Almost surely, 2^{4520397538944} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4520397538944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7751524435200).

4520397538944 is an abundant number, since it is smaller than the sum of its proper divisors (10982651331456).

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

4520397538944 is a wasteful number, since it uses less digits than its factorization.

4520397538944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116202 (or 116178 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 63.

The spelling of 4520397538944 in words is "four trillion, five hundred twenty billion, three hundred ninety-seven million, five hundred thirty-eight thousand, nine hundred forty-four".