77732117663321 has 8 divisors (see below), whose sum is σ = 85153479984000. Its totient is φ = 70369889704240.

The previous prime is 77732117663287. The next prime is 77732117663351. The reversal of 77732117663321 is 12336671123777.

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-77732117663321 is a prime.

It is a super-2 number, since 2×77732117663321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77732117663351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14783587646 + ... + 14783592903.

It is an arithmetic number, because the mean of its divisors is an integer number (10644184998000).

Almost surely, 2^{77732117663321} is an apocalyptic number.

It is an amenable number.

77732117663321 is a deficient number, since it is larger than the sum of its proper divisors (7421362320679).

77732117663321 is a wasteful number, since it uses less digits than its factorization.

77732117663321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29567180799.

The product of its digits is 9335088, while the sum is 56.

The spelling of 77732117663321 in words is "seventy-seven trillion, seven hundred thirty-two billion, one hundred seventeen million, six hundred sixty-three thousand, three hundred twenty-one".