77110674921 has 20 divisors (see below), whose sum is σ = 131645738752. Its totient is φ = 44063242488.

The previous prime is 77110674917. The next prime is 77110674941. The reversal of 77110674921 is 12947601177.

It is not a de Polignac number, because 77110674921 - 2² = 77110674917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77110674941) 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 19 ways as a sum of consecutive naturals, for example, 67998265 + ... + 67999398.

Almost surely, 2^77110674921 is an apocalyptic number.

It is an amenable number.

77110674921 is a deficient number, since it is larger than the sum of its proper divisors (54535063831).

77110674921 is a wasteful number, since it uses less digits than its factorization.

77110674921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135997682 (or 135997673 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The spelling of 77110674921 in words is "seventy-seven billion, one hundred ten million, six hundred seventy-four thousand, nine hundred twenty-one".