64782617707 has 8 divisors (see below), whose sum is σ = 65005155072. Its totient is φ = 64560172200.

The previous prime is 64782617677. The next prime is 64782617717. The reversal of 64782617707 is 70771628746.

64782617707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64782617707 - 2⁷ = 64782617579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64782617717) 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, 1580482 + ... + 1620952.

It is an arithmetic number, because the mean of its divisors is an integer number (8125644384).

Almost surely, 2^64782617707 is an apocalyptic number.

64782617707 is a deficient number, since it is larger than the sum of its proper divisors (222537365).

64782617707 is a wasteful number, since it uses less digits than its factorization.

64782617707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45929.

The product of its (nonzero) digits is 5531904, while the sum is 55.

The spelling of 64782617707 in words is "sixty-four billion, seven hundred eighty-two million, six hundred seventeen thousand, seven hundred seven".