76557308243 has 8 divisors (see below), whose sum is σ = 84674611728. Its totient is φ = 68758330464.

The previous prime is 76557308213. The next prime is 76557308257. The reversal of 76557308243 is 34280375567.

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 76557308243 - 2¹⁸ = 76557046099 is a prime.

It is a super-2 number, since 2×76557308243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76557308191 and 76557308200.

It is not an unprimeable number, because it can be changed into a prime (76557308203) 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 7 ways as a sum of consecutive naturals, for example, 79580921 + ... + 79581882.

It is an arithmetic number, because the mean of its divisors is an integer number (10584326466).

Almost surely, 2^76557308243 is an apocalyptic number.

76557308243 is a deficient number, since it is larger than the sum of its proper divisors (8117303485).

76557308243 is a wasteful number, since it uses less digits than its factorization.

76557308243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159162853.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 76557308243 in words is "seventy-six billion, five hundred fifty-seven million, three hundred eight thousand, two hundred forty-three".