3947085415555 has 8 divisors (see below), whose sum is σ = 4736797575552. Its totient is φ = 3157471614528.

The previous prime is 3947085415423. The next prime is 3947085415583. The reversal of 3947085415555 is 5555145807493.

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 3947085415555 - 2⁹ = 3947085415043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3947085415493 and 3947085415502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24501427 + ... + 24661996.

It is an arithmetic number, because the mean of its divisors is an integer number (592099696944).

Almost surely, 2^{3947085415555} is an apocalyptic number.

3947085415555 is a deficient number, since it is larger than the sum of its proper divisors (789712159997).

3947085415555 is a wasteful number, since it uses less digits than its factorization.

3947085415555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49179485.

The product of its (nonzero) digits is 75600000, while the sum is 61.

The spelling of 3947085415555 in words is "three trillion, nine hundred forty-seven billion, eighty-five million, four hundred fifteen thousand, five hundred fifty-five".