64409212907 has 24 divisors (see below), whose sum is σ = 70076213424. Its totient is φ = 59173006464.

The previous prime is 64409212891. The next prime is 64409212909. The reversal of 64409212907 is 70921290446.

It is not a de Polignac number, because 64409212907 - 2⁴ = 64409212891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64409212909) 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, 43140053 + ... + 43141545.

It is an arithmetic number, because the mean of its divisors is an integer number (2919842226).

Almost surely, 2^64409212907 is an apocalyptic number.

64409212907 is a deficient number, since it is larger than the sum of its proper divisors (5667000517).

64409212907 is a wasteful number, since it uses less digits than its factorization.

64409212907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 64409212907 in words is "sixty-four billion, four hundred nine million, two hundred twelve thousand, nine hundred seven".