3668637803855 has 4 divisors (see below), whose sum is σ = 4402365364632. Its totient is φ = 2934910243080.

The previous prime is 3668637803837. The next prime is 3668637803861. The reversal of 3668637803855 is 5583087368663.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3668637803855 - 2³⁰ = 3667564062031 is a prime.

It is a super-2 number, since 2×3668637803855² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366863780381 + ... + 366863780390.

It is an arithmetic number, because the mean of its divisors is an integer number (1100591341158).

Almost surely, 2^{3668637803855} is an apocalyptic number.

3668637803855 is a deficient number, since it is larger than the sum of its proper divisors (733727560777).

3668637803855 is an equidigital number, since it uses as much as digits as its factorization.

3668637803855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733727560776.

The product of its (nonzero) digits is 522547200, while the sum is 68.

It can be divided in two parts, 366863 and 7803855, that added together give a palindrome (8170718).

The spelling of 3668637803855 in words is "three trillion, six hundred sixty-eight billion, six hundred thirty-seven million, eight hundred three thousand, eight hundred fifty-five".