76278809677121 has 4 divisors (see below), whose sum is σ = 78340399127892. Its totient is φ = 74217220226352.

The previous prime is 76278809677069. The next prime is 76278809677151. The reversal of 76278809677121 is 12177690887267.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46763222196496 + 29515587480625 = 6838364^2 + 5432825^2 .

It is a cyclic number.

It is not a de Polignac number, because 76278809677121 - 2¹⁴ = 76278809660737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76278809677151) 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 3 ways as a sum of consecutive naturals, for example, 1030794725330 + ... + 1030794725403.

It is an arithmetic number, because the mean of its divisors is an integer number (19585099781973).

Almost surely, 2^{76278809677121} is an apocalyptic number.

It is an amenable number.

76278809677121 is a deficient number, since it is larger than the sum of its proper divisors (2061589450771).

76278809677121 is a wasteful number, since it uses less digits than its factorization.

76278809677121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061589450770.

The product of its (nonzero) digits is 199148544, while the sum is 71.

The spelling of 76278809677121 in words is "seventy-six trillion, two hundred seventy-eight billion, eight hundred nine million, six hundred seventy-seven thousand, one hundred twenty-one".