64626954948863 has 4 divisors (see below), whose sum is σ = 64627234712040. Its totient is φ = 64626675185688.

The previous prime is 64626954948827. The next prime is 64626954948901. The reversal of 64626954948863 is 36884945962646.

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 64626954948863 - 2¹² = 64626954944767 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 (64626954948163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139534793 + ... + 139997186.

It is an arithmetic number, because the mean of its divisors is an integer number (16156808678010).

Almost surely, 2^{64626954948863} is an apocalyptic number.

64626954948863 is a deficient number, since it is larger than the sum of its proper divisors (279763177).

64626954948863 is a wasteful number, since it uses less digits than its factorization.

64626954948863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279763176.

The product of its digits is 12899450880, while the sum is 80.

The spelling of 64626954948863 in words is "sixty-four trillion, six hundred twenty-six billion, nine hundred fifty-four million, nine hundred forty-eight thousand, eight hundred sixty-three".