77130376321 has 8 divisors (see below), whose sum is σ = 80147854080. Its totient is φ = 74136752592.

The previous prime is 77130376313. The next prime is 77130376327. The reversal of 77130376321 is 12367303177.

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

It is a cyclic number.

It is not a de Polignac number, because 77130376321 - 2³ = 77130376313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77130376327) 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, 5956915 + ... + 5969848.

It is an arithmetic number, because the mean of its divisors is an integer number (10018481760).

Almost surely, 2^77130376321 is an apocalyptic number.

It is an amenable number.

77130376321 is a deficient number, since it is larger than the sum of its proper divisors (3017477759).

77130376321 is a wasteful number, since it uses less digits than its factorization.

77130376321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11927015.

The product of its (nonzero) digits is 111132, while the sum is 40.

Adding to 77130376321 its reverse (12367303177), we get a palindrome (89497679498).

The spelling of 77130376321 in words is "seventy-seven billion, one hundred thirty million, three hundred seventy-six thousand, three hundred twenty-one".