64448453691 has 6 divisors (see below), whose sum is σ = 93092210900. Its totient is φ = 42965635788.

The previous prime is 64448453603. The next prime is 64448453767. The reversal of 64448453691 is 19635484446.

64448453691 is a `hidden beast` number, since 6 + 44 + 484 + 5 + 36 + 91 = 666.

It is not a de Polignac number, because 64448453691 - 2¹⁵ = 64448420923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64448455691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3580469641 + ... + 3580469658.

Almost surely, 2^64448453691 is an apocalyptic number.

64448453691 is a deficient number, since it is larger than the sum of its proper divisors (28643757209).

64448453691 is a wasteful number, since it uses less digits than its factorization.

64448453691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7160939305 (or 7160939302 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 64448453691 in words is "sixty-four billion, four hundred forty-eight million, four hundred fifty-three thousand, six hundred ninety-one".