76578149513 has 4 divisors (see below), whose sum is σ = 77085289728. Its totient is φ = 76071009300.

The previous prime is 76578149491. The next prime is 76578149533. The reversal of 76578149513 is 31594187567.

It is a happy number.

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 not a de Polignac number, because 76578149513 - 2⁸ = 76578149257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76578149533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253569881 + ... + 253570182.

It is an arithmetic number, because the mean of its divisors is an integer number (19271322432).

Almost surely, 2^76578149513 is an apocalyptic number.

It is an amenable number.

76578149513 is a deficient number, since it is larger than the sum of its proper divisors (507140215).

76578149513 is a wasteful number, since it uses less digits than its factorization.

76578149513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507140214.

The product of its digits is 6350400, while the sum is 56.

The spelling of 76578149513 in words is "seventy-six billion, five hundred seventy-eight million, one hundred forty-nine thousand, five hundred thirteen".