64635044145 has 32 divisors (see below), whose sum is σ = 121384121088. Its totient is φ = 28748867328.

The previous prime is 64635044137. The next prime is 64635044147. The reversal of 64635044145 is 54144053646.

It is not a de Polignac number, because 64635044145 - 2³ = 64635044137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64635044097 and 64635044106.

It is not an unprimeable number, because it can be changed into a prime (64635044147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8314654 + ... + 8322423.

It is an arithmetic number, because the mean of its divisors is an integer number (3793253784).

Almost surely, 2^64635044145 is an apocalyptic number.

It is an amenable number.

64635044145 is a deficient number, since it is larger than the sum of its proper divisors (56749076943).

64635044145 is a wasteful number, since it uses less digits than its factorization.

64635044145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16637129.

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 64635044145 in words is "sixty-four billion, six hundred thirty-five million, forty-four thousand, one hundred forty-five".