64495477697 has 8 divisors (see below), whose sum is σ = 74178603456. Its totient is φ = 54929723472.

The previous prime is 64495477691. The next prime is 64495477723. The reversal of 64495477697 is 79677459446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64495477697 - 2⁸ = 64495477441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64495477691) 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 7 ways as a sum of consecutive naturals, for example, 29341703 + ... + 29343900.

It is an arithmetic number, because the mean of its divisors is an integer number (9272325432).

Almost surely, 2^64495477697 is an apocalyptic number.

It is an amenable number.

64495477697 is a deficient number, since it is larger than the sum of its proper divisors (9683125759).

64495477697 is a wasteful number, since it uses less digits than its factorization.

64495477697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58685767.

The product of its digits is 320060160, while the sum is 68.

The spelling of 64495477697 in words is "sixty-four billion, four hundred ninety-five million, four hundred seventy-seven thousand, six hundred ninety-seven".