405440525463 has 8 divisors (see below), whose sum is σ = 541052193408. Its totient is φ = 270061270584.

The previous prime is 405440525449. The next prime is 405440525519. The reversal of 405440525463 is 364525044504.

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 405440525463 - 2¹⁶ = 405440459927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405440525263) 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, 58099195 + ... + 58106172.

It is an arithmetic number, because the mean of its divisors is an integer number (67631524176).

Almost surely, 2^405440525463 is an apocalyptic number.

405440525463 is a deficient number, since it is larger than the sum of its proper divisors (135611667945).

405440525463 is a wasteful number, since it uses less digits than its factorization.

405440525463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116206533.

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

Adding to 405440525463 its reverse (364525044504), we get a palindrome (769965569967).

It can be divided in two parts, 40544052 and 5463, that added together give a triangular number (40549515 = T₉₀₀₅).

The spelling of 405440525463 in words is "four hundred five billion, four hundred forty million, five hundred twenty-five thousand, four hundred sixty-three".