64240760163 has 4 divisors (see below), whose sum is σ = 85654346888. Its totient is φ = 42827173440.

The previous prime is 64240760117. The next prime is 64240760189. The reversal of 64240760163 is 36106704246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64240760163 - 2⁶ = 64240760099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64240760663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10706793358 + ... + 10706793363.

It is an arithmetic number, because the mean of its divisors is an integer number (21413586722).

Almost surely, 2^64240760163 is an apocalyptic number.

64240760163 is a deficient number, since it is larger than the sum of its proper divisors (21413586725).

64240760163 is a wasteful number, since it uses less digits than its factorization.

64240760163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21413586724.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 64240760163 in words is "sixty-four billion, two hundred forty million, seven hundred sixty thousand, one hundred sixty-three".