77321012377 has 16 divisors (see below), whose sum is σ = 88883222400. Its totient is φ = 65888081280.

The previous prime is 77321012369. The next prime is 77321012401.

77321012377 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 77321012377 - 2³ = 77321012369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77321012077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9168999 + ... + 9177427.

It is an arithmetic number, because the mean of its divisors is an integer number (5555201400).

Almost surely, 2^77321012377 is an apocalyptic number.

It is an amenable number.

77321012377 is a deficient number, since it is larger than the sum of its proper divisors (11562210023).

77321012377 is a wasteful number, since it uses less digits than its factorization.

77321012377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15936.

The product of its (nonzero) digits is 86436, while the sum is 40.

It can be divided in two parts, 773210 and 12377, that added together give a palindrome (785587).

The spelling of 77321012377 in words is "seventy-seven billion, three hundred twenty-one million, twelve thousand, three hundred seventy-seven".