405645052351 has 32 divisors (see below), whose sum is σ = 514366649856. Its totient is φ = 310701744000.

The previous prime is 405645052333. The next prime is 405645052391. The reversal of 405645052351 is 153250546504.

It is a cyclic number.

It is not a de Polignac number, because 405645052351 - 2²⁷ = 405510834623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405645052301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7351501 + ... + 7406473.

It is an arithmetic number, because the mean of its divisors is an integer number (16073957808).

Almost surely, 2^405645052351 is an apocalyptic number.

405645052351 is a deficient number, since it is larger than the sum of its proper divisors (108721597505).

405645052351 is a wasteful number, since it uses less digits than its factorization.

405645052351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56623.

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 405645052351 its reverse (153250546504), we get a palindrome (558895598855).

The spelling of 405645052351 in words is "four hundred five billion, six hundred forty-five million, fifty-two thousand, three hundred fifty-one".