64005676777 has 8 divisors (see below), whose sum is σ = 73683282816. Its totient is φ = 54461555232.

The previous prime is 64005676769. The next prime is 64005676793. The reversal of 64005676777 is 77767650046.

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

It is not a de Polignac number, because 64005676777 - 2³ = 64005676769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64005676717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33370093 + ... + 33372010.

It is an arithmetic number, because the mean of its divisors is an integer number (9210410352).

Almost surely, 2^64005676777 is an apocalyptic number.

It is an amenable number.

64005676777 is a deficient number, since it is larger than the sum of its proper divisors (9677606039).

64005676777 is a wasteful number, since it uses less digits than its factorization.

64005676777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66742247.

The product of its (nonzero) digits is 10372320, while the sum is 55.

The spelling of 64005676777 in words is "sixty-four billion, five million, six hundred seventy-six thousand, seven hundred seventy-seven".