64560016051 has 6 divisors (see below), whose sum is σ = 68581055420. Its totient is φ = 60762367776.

The previous prime is 64560016049. The next prime is 64560016057. The reversal of 64560016051 is 15061006546.

It is a happy number.

It is not a de Polignac number, because 64560016051 - 2¹ = 64560016049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64560015998 and 64560016016.

It is not an unprimeable number, because it can be changed into a prime (64560016057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111695241 + ... + 111695818.

Almost surely, 2^64560016051 is an apocalyptic number.

64560016051 is a deficient number, since it is larger than the sum of its proper divisors (4021039369).

64560016051 is a wasteful number, since it uses less digits than its factorization.

64560016051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223391093 (or 223391076 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 64560016051 in words is "sixty-four billion, five hundred sixty million, sixteen thousand, fifty-one".