7866165949388 has 24 divisors (see below), whose sum is σ = 13780786874400. Its totient is φ = 3928799040768.

The previous prime is 7866165949361. The next prime is 7866165949391. The reversal of 7866165949388 is 8839495616687.

It is a super-2 number, since 2×7866165949388² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43454081 + ... + 43634727.

It is an arithmetic number, because the mean of its divisors is an integer number (574199453100).

Almost surely, 2^{7866165949388} is an apocalyptic number.

It is an amenable number.

7866165949388 is a deficient number, since it is larger than the sum of its proper divisors (5914620925012).

7866165949388 is a wasteful number, since it uses less digits than its factorization.

7866165949388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192449 (or 192447 counting only the distinct ones).

The product of its digits is 3762339840, while the sum is 80.

The spelling of 7866165949388 in words is "seven trillion, eight hundred sixty-six billion, one hundred sixty-five million, nine hundred forty-nine thousand, three hundred eighty-eight".