78847775761711 has 8 divisors (see below), whose sum is σ = 86015943952848. Its totient is φ = 71679639000000.

The previous prime is 78847775761709. The next prime is 78847775761757. The reversal of 78847775761711 is 11716757774887.

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 78847775761711 - 2¹ = 78847775761709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78847775741711) 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, 2450040 + ... + 12794461.

It is an arithmetic number, because the mean of its divisors is an integer number (10751992994106).

Almost surely, 2^{78847775761711} is an apocalyptic number.

78847775761711 is a deficient number, since it is larger than the sum of its proper divisors (7168168191137).

78847775761711 is a wasteful number, since it uses less digits than its factorization.

78847775761711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15714713.

The product of its digits is 903544320, while the sum is 76.

The spelling of 78847775761711 in words is "seventy-eight trillion, eight hundred forty-seven billion, seven hundred seventy-five million, seven hundred sixty-one thousand, seven hundred eleven".