405145220253 has 8 divisors (see below), whose sum is σ = 540551140416. Its totient is φ = 269918056800.

The previous prime is 405145220239. The next prime is 405145220257. The reversal of 405145220253 is 352022541504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405145220253 - 2¹⁶ = 405145154717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405145220257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44683888 + ... + 44692953.

It is an arithmetic number, because the mean of its divisors is an integer number (67568892552).

Almost surely, 2^405145220253 is an apocalyptic number.

It is an amenable number.

405145220253 is a deficient number, since it is larger than the sum of its proper divisors (135405920163).

405145220253 is a wasteful number, since it uses less digits than its factorization.

405145220253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89378355.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 405145220253 its reverse (352022541504), we get a palindrome (757167761757).

The spelling of 405145220253 in words is "four hundred five billion, one hundred forty-five million, two hundred twenty thousand, two hundred fifty-three".