64737475849 has 24 divisors (see below), whose sum is σ = 71929108160. Its totient is φ = 58093228512.

The previous prime is 64737475843. The next prime is 64737475883. The reversal of 64737475849 is 94857473746.

It is not a de Polignac number, because 64737475849 - 2⁹ = 64737475337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64737475843) 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 23 ways as a sum of consecutive naturals, for example, 1003987 + ... + 1066519.

Almost surely, 2^64737475849 is an apocalyptic number.

It is an amenable number.

64737475849 is a deficient number, since it is larger than the sum of its proper divisors (7191632311).

64737475849 is a wasteful number, since it uses less digits than its factorization.

64737475849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62701 (or 62678 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 64.

The spelling of 64737475849 in words is "sixty-four billion, seven hundred thirty-seven million, four hundred seventy-five thousand, eight hundred forty-nine".