76121665771 has 8 divisors (see below), whose sum is σ = 77895696384. Its totient is φ = 74347806120.

The previous prime is 76121665757. The next prime is 76121665793. The reversal of 76121665771 is 17756612167.

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 76121665771 - 2⁷ = 76121665643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76121665271) 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, 1494006 + ... + 1544116.

It is an arithmetic number, because the mean of its divisors is an integer number (9736962048).

Almost surely, 2^76121665771 is an apocalyptic number.

76121665771 is a deficient number, since it is larger than the sum of its proper divisors (1774030613).

76121665771 is a wasteful number, since it uses less digits than its factorization.

76121665771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85481.

The product of its digits is 740880, while the sum is 49.

The spelling of 76121665771 in words is "seventy-six billion, one hundred twenty-one million, six hundred sixty-five thousand, seven hundred seventy-one".