76778806611 has 32 divisors (see below), whose sum is σ = 111095083008. Its totient is φ = 46885783680.

The previous prime is 76778806583. The next prime is 76778806631. The reversal of 76778806611 is 11660887767.

It is not a de Polignac number, because 76778806611 - 2¹⁴ = 76778790227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76778806631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3943681 + ... + 3963101.

It is an arithmetic number, because the mean of its divisors is an integer number (3471721344).

Almost surely, 2^76778806611 is an apocalyptic number.

76778806611 is a deficient number, since it is larger than the sum of its proper divisors (34316276397).

76778806611 is a wasteful number, since it uses less digits than its factorization.

76778806611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20211.

The product of its (nonzero) digits is 4741632, while the sum is 57.

The spelling of 76778806611 in words is "seventy-six billion, seven hundred seventy-eight million, eight hundred six thousand, six hundred eleven".