77008920412667 has 4 divisors (see below), whose sum is σ = 77439137845320. Its totient is φ = 76578702980016.

The previous prime is 77008920412643. The next prime is 77008920412681. The reversal of 77008920412667 is 76621402980077.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77008920412667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77008920472667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215108716058 + ... + 215108716415.

It is an arithmetic number, because the mean of its divisors is an integer number (19359784461330).

Almost surely, 2^{77008920412667} is an apocalyptic number.

77008920412667 is a deficient number, since it is larger than the sum of its proper divisors (430217432653).

77008920412667 is a wasteful number, since it uses less digits than its factorization.

77008920412667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430217432652.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 77008920412667 in words is "seventy-seven trillion, eight billion, nine hundred twenty million, four hundred twelve thousand, six hundred sixty-seven".