405116144452 has 12 divisors (see below), whose sum is σ = 726244795836. Its totient is φ = 197617631360.

The previous prime is 405116144431. The next prime is 405116144527. The reversal of 405116144452 is 254441611504.

It can be written as a sum of positive squares in 2 ways, for example, as 213540106816 + 191576037636 = 462104^2 + 437694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235110033 + ... + 1235110360.

It is an arithmetic number, because the mean of its divisors is an integer number (60520399653).

Almost surely, 2^405116144452 is an apocalyptic number.

It is an amenable number.

405116144452 is a deficient number, since it is larger than the sum of its proper divisors (321128651384).

405116144452 is a wasteful number, since it uses less digits than its factorization.

405116144452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470220438 (or 2470220436 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 405116144452 its reverse (254441611504), we get a palindrome (659557755956).

The spelling of 405116144452 in words is "four hundred five billion, one hundred sixteen million, one hundred forty-four thousand, four hundred fifty-two".