405213541553 has 4 divisors (see below), whose sum is σ = 405576312180. Its totient is φ = 404850770928.

The previous prime is 405213541531. The next prime is 405213541573. The reversal of 405213541553 is 355145312504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78912113569 + 326301427984 = 280913^2 + 571228^2 .

It is a cyclic number.

It is not a de Polignac number, because 405213541553 - 2¹⁸ = 405213279409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405213541573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181383638 + ... + 181385871.

It is an arithmetic number, because the mean of its divisors is an integer number (101394078045).

Almost surely, 2^405213541553 is an apocalyptic number.

It is an amenable number.

405213541553 is a deficient number, since it is larger than the sum of its proper divisors (362770627).

405213541553 is a wasteful number, since it uses less digits than its factorization.

405213541553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362770626.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 405213541553 in words is "four hundred five billion, two hundred thirteen million, five hundred forty-one thousand, five hundred fifty-three".