78007827808511 has 16 divisors (see below), whose sum is σ = 78480778932864. Its totient is φ = 77535687177984.

The previous prime is 78007827808499. The next prime is 78007827808513. The reversal of 78007827808511 is 11580872870087.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78007827808511 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 (78007827808513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983206835 + ... + 983286171.

It is an arithmetic number, because the mean of its divisors is an integer number (4905048683304).

Almost surely, 2^{78007827808511} is an apocalyptic number.

78007827808511 is a deficient number, since it is larger than the sum of its proper divisors (472951124353).

78007827808511 is a wasteful number, since it uses less digits than its factorization.

78007827808511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84370.

The product of its (nonzero) digits is 14049280, while the sum is 62.

The spelling of 78007827808511 in words is "seventy-eight trillion, seven billion, eight hundred twenty-seven million, eight hundred eight thousand, five hundred eleven".