4405161280 has 112 divisors (see below), whose sum is σ = 11363852304. Its totient is φ = 1616855040.

The previous prime is 4405161269. The next prime is 4405161283. The reversal of 4405161280 is 821615044.

It can be written as a sum of positive squares in 8 ways, for example, as 261921856 + 4143239424 = 16184^2 + 64368^2 .

It is a super-2 number, since 2×4405161280² = 38810891805622476800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4405161283) 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, 716620 + ... + 722740.

It is an arithmetic number, because the mean of its divisors is an integer number (101462967).

Almost surely, 2^4405161280 is an apocalyptic number.

4405161280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4405161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5681926152).

4405161280 is an abundant number, since it is smaller than the sum of its proper divisors (6958691024).

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

4405161280 is a wasteful number, since it uses less digits than its factorization.

4405161280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324 (or 6314 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 4405161280 is about 66371.3890166539. The cubic root of 4405161280 is about 1639.2830100041.

The spelling of 4405161280 in words is "four billion, four hundred five million, one hundred sixty-one thousand, two hundred eighty".