3681388851047 has 8 divisors (see below), whose sum is σ = 3701222632800. Its totient is φ = 3661566650784.

The previous prime is 3681388851043. The next prime is 3681388851059. The reversal of 3681388851047 is 7401588831863.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3681388851047 - 2² = 3681388851043 is a prime.

It is a super-2 number, since 2×3681388851047² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681388851043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2257547 + ... + 3529772.

It is an arithmetic number, because the mean of its divisors is an integer number (462652829100).

Almost surely, 2^{3681388851047} is an apocalyptic number.

3681388851047 is a deficient number, since it is larger than the sum of its proper divisors (19833781753).

3681388851047 is a wasteful number, since it uses less digits than its factorization.

3681388851047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790745.

The product of its (nonzero) digits is 30965760, while the sum is 62.

The spelling of 3681388851047 in words is "three trillion, six hundred eighty-one billion, three hundred eighty-eight million, eight hundred fifty-one thousand, forty-seven".