43980465111040 has 88 divisors (see below), whose sum is σ = 105553116266490. Its totient is φ = 17592186044416.

The previous prime is 43980465111013. The next prime is 43980465111043. The reversal of 43980465111040 is 4011156408934.

It can be written as a sum of positive squares in only one way, i.e., 39582418599936 + 4398046511104 = 6291456^2 + 2097152^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=40, B=2.

It is a super-2 number, since 2×43980465111040² (a number of 28 digits) contains 22 as substring.

It is a nialpdrome in base 4.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (43980465111043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (2) of ones.

In principle, a polygon with 43980465111040 sides can be constructed with ruler and compass.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8796093022206 + ... + 8796093022210.

Almost surely, 2^{43980465111040} is an apocalyptic number.

43980465111040 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 43980465111040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52776558133245).

43980465111040 is an abundant number, since it is smaller than the sum of its proper divisors (61572651155450).

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

43980465111040 is an frugal number, since it uses more digits than its factorization.

43980465111040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 43980465111040 in words is "forty-three trillion, nine hundred eighty billion, four hundred sixty-five million, one hundred eleven thousand, forty".