405253210443252 has 12 divisors (see below), whose sum is σ = 945590824367616. Its totient is φ = 135084403481080.

The previous prime is 405253210443239. The next prime is 405253210443269. The reversal of 405253210443252 is 252344012352504.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 16885550435124 + ... + 16885550435147.

It is an arithmetic number, because the mean of its divisors is an integer number (78799235363968).

Almost surely, 2^{405253210443252} is an apocalyptic number.

It is an amenable number.

405253210443252 is an abundant number, since it is smaller than the sum of its proper divisors (540337613924364).

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

405253210443252 is a wasteful number, since it uses less digits than its factorization.

405253210443252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33771100870278 (or 33771100870276 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 405253210443252 its reverse (252344012352504), we get a palindrome (657597222795756).

The spelling of 405253210443252 in words is "four hundred five trillion, two hundred fifty-three billion, two hundred ten million, four hundred forty-three thousand, two hundred fifty-two".