64535060615 has 4 divisors (see below), whose sum is σ = 77442072744. Its totient is φ = 51628048488.

The previous prime is 64535060587. The next prime is 64535060617. The reversal of 64535060615 is 51606053546.

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

It is a cyclic number.

It is not a de Polignac number, because 64535060615 - 2¹⁰ = 64535059591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64535060617) 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 3 ways as a sum of consecutive naturals, for example, 6453506057 + ... + 6453506066.

It is an arithmetic number, because the mean of its divisors is an integer number (19360518186).

Almost surely, 2^64535060615 is an apocalyptic number.

64535060615 is a deficient number, since it is larger than the sum of its proper divisors (12907012129).

64535060615 is a wasteful number, since it uses less digits than its factorization.

64535060615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907012128.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 64535060615 in words is "sixty-four billion, five hundred thirty-five million, sixty thousand, six hundred fifteen".