3977272916655 has 24 divisors (see below), whose sum is σ = 6469668865296. Its totient is φ = 2086438222080.

The previous prime is 3977272916621. The next prime is 3977272916779. The reversal of 3977272916655 is 5566192727793.

It is not a de Polignac number, because 3977272916655 - 2⁹ = 3977272916143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3977272916655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35573254 + ... + 35684883.

It is an arithmetic number, because the mean of its divisors is an integer number (269569536054).

Almost surely, 2^{3977272916655} is an apocalyptic number.

3977272916655 is a deficient number, since it is larger than the sum of its proper divisors (2492395948641).

3977272916655 is an equidigital number, since it uses as much as digits as its factorization.

3977272916655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71258267 (or 71258206 counting only the distinct ones).

The product of its digits is 300056400, while the sum is 69.

The spelling of 3977272916655 in words is "three trillion, nine hundred seventy-seven billion, two hundred seventy-two million, nine hundred sixteen thousand, six hundred fifty-five".