64985166045 has 48 divisors (see below), whose sum is σ = 114915406320. Its totient is φ = 33965826048.

The previous prime is 64985166031. The next prime is 64985166047. The reversal of 64985166045 is 54066158946.

64985166045 is a `hidden beast` number, since 6 + 498 + 51 + 6 + 60 + 45 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 39735638244 + 25249527801 = 199338^2 + 158901^2 .

It is not a de Polignac number, because 64985166045 - 2⁸ = 64985165789 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64985165982 and 64985166000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64985166047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 380769 + ... + 524361.

It is an arithmetic number, because the mean of its divisors is an integer number (2394070965).

Almost surely, 2^64985166045 is an apocalyptic number.

It is an amenable number.

64985166045 is a deficient number, since it is larger than the sum of its proper divisors (49930240275).

64985166045 is a wasteful number, since it uses less digits than its factorization.

64985166045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143806 (or 143803 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 64985166045 in words is "sixty-four billion, nine hundred eighty-five million, one hundred sixty-six thousand, forty-five".