4013524499220 has 54 divisors (see below), whose sum is σ = 12174439178538. Its totient is φ = 1070266032288.

The previous prime is 4013524499219. The next prime is 4013524499221. The reversal of 4013524499220 is 229944253104.

4013524499220 is a `hidden beast` number, since 4 + 0 + 13 + 524 + 4 + 9 + 92 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (4013524499219) and next prime (4013524499221).

It can be written as a sum of positive squares in only one way, i.e., 3210819599376 + 802704899844 = 1791876^2 + 895938^2 .

It is a super-2 number, since 2×4013524499220² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013524499221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26803479 + ... + 26952801.

Almost surely, 2^{4013524499220} is an apocalyptic number.

It is an amenable number.

4013524499220 is an abundant number, since it is smaller than the sum of its proper divisors (8160914679318).

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

4013524499220 is an frugal number, since it uses more digits than its factorization.

4013524499220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298661 (or 149333 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

Multiplying 4013524499220 by its sum of digits (45), we get a square (180608602464900 = 13439070²).

4013524499220 divided by its sum of digits (45) gives a square (89189433316 = 298646²).

The spelling of 4013524499220 in words is "four trillion, thirteen billion, five hundred twenty-four million, four hundred ninety-nine thousand, two hundred twenty".