76855828409 has 4 divisors (see below), whose sum is σ = 76953485904. Its totient is φ = 76758170916.

The previous prime is 76855828369. The next prime is 76855828417. The reversal of 76855828409 is 90482855867.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76855828409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76855828109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48827567 + ... + 48829140.

It is an arithmetic number, because the mean of its divisors is an integer number (19238371476).

Almost surely, 2^76855828409 is an apocalyptic number.

It is an amenable number.

76855828409 is a deficient number, since it is larger than the sum of its proper divisors (97657495).

76855828409 is an equidigital number, since it uses as much as digits as its factorization.

76855828409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97657494.

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 76855828409 in words is "seventy-six billion, eight hundred fifty-five million, eight hundred twenty-eight thousand, four hundred nine".