74664766746647 has 64 divisors (see below), whose sum is σ = 99860746890240. Its totient is φ = 54065258956800.

The previous prime is 74664766746641. The next prime is 74664766746659.

74664766746647 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74664766746647 - 2¹⁰ = 74664766745623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74664766746641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 328729373 + ... + 328956425.

It is an arithmetic number, because the mean of its divisors is an integer number (1560324170160).

Almost surely, 2^{74664766746647} is an apocalyptic number.

74664766746647 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

74664766746647 is a deficient number, since it is larger than the sum of its proper divisors (25195980143593).

74664766746647 is a wasteful number, since it uses less digits than its factorization.

74664766746647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231384.

The product of its digits is 28677390336, while the sum is 80.

The spelling of 74664766746647 in words is "seventy-four trillion, six hundred sixty-four billion, seven hundred sixty-six million, seven hundred forty-six thousand, six hundred forty-seven".