405253343475 has 72 divisors (see below), whose sum is σ = 734150993472. Its totient is φ = 213672849600.

The previous prime is 405253343471. The next prime is 405253343497. The reversal of 405253343475 is 574343352504.

It is a happy number.

405253343475 is a `hidden beast` number, since 4 + 0 + 5 + 2 + 533 + 43 + 4 + 75 = 666.

It is not a de Polignac number, because 405253343475 - 2² = 405253343471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 405253343475.

It is not an unprimeable number, because it can be changed into a prime (405253343471) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11803684 + ... + 11837966.

It is an arithmetic number, because the mean of its divisors is an integer number (10196541576).

Almost surely, 2^405253343475 is an apocalyptic number.

405253343475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405253343475 is a deficient number, since it is larger than the sum of its proper divisors (328897649997).

405253343475 is a wasteful number, since it uses less digits than its factorization.

405253343475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34897 (or 34889 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 45.

Adding to 405253343475 its reverse (574343352504), we get a palindrome (979596695979).

The spelling of 405253343475 in words is "four hundred five billion, two hundred fifty-three million, three hundred forty-three thousand, four hundred seventy-five".