63405649545273 has 24 divisors (see below), whose sum is σ = 104670465182400. Its totient is φ = 36231515378784.

The previous prime is 63405649545263. The next prime is 63405649545331. The reversal of 63405649545273 is 37254594650436.

63405649545273 is a `hidden beast` number, since 6 + 3 + 4 + 0 + 5 + 64 + 9 + 545 + 27 + 3 = 666.

It is not a de Polignac number, because 63405649545273 - 2⁶ = 63405649545209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 63405649545273.

It is not an unprimeable number, because it can be changed into a prime (63405649545223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4276263 + ... + 12045651.

It is an arithmetic number, because the mean of its divisors is an integer number (4361269382600).

Almost surely, 2^{63405649545273} is an apocalyptic number.

63405649545273 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

63405649545273 is a deficient number, since it is larger than the sum of its proper divisors (41264815637127).

63405649545273 is a wasteful number, since it uses less digits than its factorization.

63405649545273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7898941 (or 7898938 counting only the distinct ones).

The product of its (nonzero) digits is 326592000, while the sum is 63.

The spelling of 63405649545273 in words is "sixty-three trillion, four hundred five billion, six hundred forty-nine million, five hundred forty-five thousand, two hundred seventy-three".