43122540778400 has 36 divisors (see below), whose sum is σ = 105272902677222. Its totient is φ = 17249016311040.

The previous prime is 43122540778381. The next prime is 43122540778403. The reversal of 43122540778400 is 487704522134.

It can be written as a sum of positive squares in 3 ways, for example, as 28468926154384 + 14653614624016 = 5335628^2 + 3828004^2 .

It is not an unprimeable number, because it can be changed into a prime (43122540778403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26951587187 + ... + 26951588786.

Almost surely, 2^{43122540778400} is an apocalyptic number.

43122540778400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43122540778400 is an abundant number, since it is smaller than the sum of its proper divisors (62150361898822).

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

43122540778400 is a wasteful number, since it uses less digits than its factorization.

43122540778400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53903175993 (or 53903175980 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 47.

The spelling of 43122540778400 in words is "forty-three trillion, one hundred twenty-two billion, five hundred forty million, seven hundred seventy-eight thousand, four hundred".