77061664611 has 48 divisors (see below), whose sum is σ = 118723138560. Its totient is φ = 48064199040.

The previous prime is 77061664609. The next prime is 77061664621. The reversal of 77061664611 is 11646616077.

77061664611 is a `hidden beast` number, since 7 + 70 + 61 + 66 + 461 + 1 = 666.

It is not a de Polignac number, because 77061664611 - 2¹ = 77061664609 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77061664621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1727751 + ... + 1771791.

It is an arithmetic number, because the mean of its divisors is an integer number (2473398720).

Almost surely, 2^77061664611 is an apocalyptic number.

77061664611 is a deficient number, since it is larger than the sum of its proper divisors (41661473949).

77061664611 is a wasteful number, since it uses less digits than its factorization.

77061664611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44256 (or 44253 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 77061664611 in words is "seventy-seven billion, sixty-one million, six hundred sixty-four thousand, six hundred eleven".