77080140667 has 4 divisors (see below), whose sum is σ = 77298498360. Its totient is φ = 76861782976.

The previous prime is 77080140659. The next prime is 77080140689. The reversal of 77080140667 is 76604108077.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77080140667 - 2³ = 77080140659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77080146667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109178317 + ... + 109179022.

It is an arithmetic number, because the mean of its divisors is an integer number (19324624590).

Almost surely, 2^77080140667 is an apocalyptic number.

77080140667 is a deficient number, since it is larger than the sum of its proper divisors (218357693).

77080140667 is a wasteful number, since it uses less digits than its factorization.

77080140667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218357692.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 77080140667 in words is "seventy-seven billion, eighty million, one hundred forty thousand, six hundred sixty-seven".