4012402044544 has 48 divisors (see below), whose sum is σ = 8436308109570. Its totient is φ = 1900611472896.

The previous prime is 4012402044503. The next prime is 4012402044569. The reversal of 4012402044544 is 4454402042104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2271290126400 + 1741111918144 = 1507080^2 + 1319512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43370539 + ... + 43462954.

Almost surely, 2^{4012402044544} is an apocalyptic number.

It is an amenable number.

4012402044544 is an abundant number, since it is smaller than the sum of its proper divisors (4423906065026).

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

4012402044544 is an equidigital number, since it uses as much as digits as its factorization.

4012402044544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86833545 (or 86833514 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 4012402044544 its reverse (4454402042104), we get a palindrome (8466804086648).

The spelling of 4012402044544 in words is "four trillion, twelve billion, four hundred two million, forty-four thousand, five hundred forty-four".