3668774778663 has 32 divisors (see below), whose sum is σ = 5069200768512. Its totient is φ = 2358366192000.

The previous prime is 3668774778637. The next prime is 3668774778667.

3668774778663 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-3668774778663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668774778667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6796420 + ... + 7316342.

It is an arithmetic number, because the mean of its divisors is an integer number (158412524016).

Almost surely, 2^{3668774778663} is an apocalyptic number.

3668774778663 is a deficient number, since it is larger than the sum of its proper divisors (1400425989849).

3668774778663 is a wasteful number, since it uses less digits than its factorization.

3668774778663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520535.

The product of its digits is 7169347584, while the sum is 78.

The spelling of 3668774778663 in words is "three trillion, six hundred sixty-eight billion, seven hundred seventy-four million, seven hundred seventy-eight thousand, six hundred sixty-three".