64703645105 has 32 divisors (see below), whose sum is σ = 87656646528. Its totient is φ = 45435686400.

The previous prime is 64703645099. The next prime is 64703645131. The reversal of 64703645105 is 50154630746.

It is not a de Polignac number, because 64703645105 - 2⁴ = 64703645089 is a prime.

It is a super-2 number, since 2×64703645105² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 145229 + ... + 387941.

It is an arithmetic number, because the mean of its divisors is an integer number (2739270204).

Almost surely, 2^64703645105 is an apocalyptic number.

It is an amenable number.

64703645105 is a deficient number, since it is larger than the sum of its proper divisors (22953001423).

64703645105 is a wasteful number, since it uses less digits than its factorization.

64703645105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242897.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 64703645105 in words is "sixty-four billion, seven hundred three million, six hundred forty-five thousand, one hundred five".