64263747905 has 64 divisors (see below), whose sum is σ = 94504112640. Its totient is φ = 40949121024.

The previous prime is 64263747881. The next prime is 64263747917. The reversal of 64263747905 is 50974736246.

It is not a de Polignac number, because 64263747905 - 2¹⁰ = 64263746881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30183881 + ... + 30186009.

It is an arithmetic number, because the mean of its divisors is an integer number (1476626760).

Almost surely, 2^64263747905 is an apocalyptic number.

It is an amenable number.

64263747905 is a deficient number, since it is larger than the sum of its proper divisors (30240364735).

64263747905 is a wasteful number, since it uses less digits than its factorization.

64263747905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778.

The product of its (nonzero) digits is 7620480, while the sum is 53.

The spelling of 64263747905 in words is "sixty-four billion, two hundred sixty-three million, seven hundred forty-seven thousand, nine hundred five".