64770647654 has 16 divisors (see below), whose sum is σ = 100643906160. Its totient is φ = 31240429440.

The previous prime is 64770647629. The next prime is 64770647657. The reversal of 64770647654 is 45674607746.

It is a self number, because there is not a number n which added to its sum of digits gives 64770647654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64770647657) 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, 4430264 + ... + 4444859.

It is an arithmetic number, because the mean of its divisors is an integer number (6290244135).

Almost surely, 2^64770647654 is an apocalyptic number.

64770647654 is a deficient number, since it is larger than the sum of its proper divisors (35873258506).

64770647654 is a wasteful number, since it uses less digits than its factorization.

64770647654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875255.

The product of its (nonzero) digits is 23708160, while the sum is 56.

The spelling of 64770647654 in words is "sixty-four billion, seven hundred seventy million, six hundred forty-seven thousand, six hundred fifty-four".