77331666077 has 8 divisors (see below), whose sum is σ = 81060080640. Its totient is φ = 73690979040.

The previous prime is 77331666023. The next prime is 77331666101. The reversal of 77331666077 is 77066613377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77331666077 is a prime.

It is a super-3 number, since 3×77331666077³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77331666977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21930077 + ... + 21933602.

It is an arithmetic number, because the mean of its divisors is an integer number (10132510080).

Almost surely, 2^77331666077 is an apocalyptic number.

It is an amenable number.

77331666077 is a deficient number, since it is larger than the sum of its proper divisors (3728414563).

77331666077 is a wasteful number, since it uses less digits than its factorization.

77331666077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43863763.

The product of its (nonzero) digits is 4667544, while the sum is 53.

The spelling of 77331666077 in words is "seventy-seven billion, three hundred thirty-one million, six hundred sixty-six thousand, seventy-seven".