63654336449 has 16 divisors (see below), whose sum is σ = 69737189760. Its totient is φ = 57621072000.

The previous prime is 63654336409. The next prime is 63654336467. The reversal of 63654336449 is 94463345636.

It is a cyclic number.

It is not a de Polignac number, because 63654336449 - 2²⁸ = 63385900993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63654336449.

It is not an unprimeable number, because it can be changed into a prime (63654336409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6744764 + ... + 6754194.

It is an arithmetic number, because the mean of its divisors is an integer number (4358574360).

Almost surely, 2^63654336449 is an apocalyptic number.

It is an amenable number.

63654336449 is a deficient number, since it is larger than the sum of its proper divisors (6082853311).

63654336449 is a wasteful number, since it uses less digits than its factorization.

63654336449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11992.

The product of its digits is 16796160, while the sum is 53.

The spelling of 63654336449 in words is "sixty-three billion, six hundred fifty-four million, three hundred thirty-six thousand, four hundred forty-nine".