64441263345 has 32 divisors (see below), whose sum is σ = 104254394112. Its totient is φ = 33987796992.

The previous prime is 64441263331. The next prime is 64441263389. The reversal of 64441263345 is 54336214446.

It is not a de Polignac number, because 64441263345 - 2⁹ = 64441262833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64441263297 and 64441263306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480849 + ... + 600081.

It is an arithmetic number, because the mean of its divisors is an integer number (3257949816).

Almost surely, 2^64441263345 is an apocalyptic number.

It is an amenable number.

64441263345 is a deficient number, since it is larger than the sum of its proper divisors (39813130767).

64441263345 is a wasteful number, since it uses less digits than its factorization.

64441263345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119641.

The product of its digits is 829440, while the sum is 42.

The spelling of 64441263345 in words is "sixty-four billion, four hundred forty-one million, two hundred sixty-three thousand, three hundred forty-five".