76398507821 has 8 divisors (see below), whose sum is σ = 76498855680. Its totient is φ = 76298209488.

The previous prime is 76398507793. The next prime is 76398507847. The reversal of 76398507821 is 12870589367.

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-76398507821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76398500821) 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, 3825500 + ... + 3845418.

It is an arithmetic number, because the mean of its divisors is an integer number (9562356960).

Almost surely, 2^76398507821 is an apocalyptic number.

It is an amenable number.

76398507821 is a deficient number, since it is larger than the sum of its proper divisors (100347859).

76398507821 is a wasteful number, since it uses less digits than its factorization.

76398507821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24763.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 76398507821 in words is "seventy-six billion, three hundred ninety-eight million, five hundred seven thousand, eight hundred twenty-one".