77343421406 has 4 divisors (see below), whose sum is σ = 116015132112. Its totient is φ = 38671710702.

The previous prime is 77343421403. The next prime is 77343421411. The reversal of 77343421406 is 60412434377.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60412434377 = 379 ⋅159399563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77343421403) 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 as a sum of consecutive naturals, namely, 19335855350 + ... + 19335855353.

It is an arithmetic number, because the mean of its divisors is an integer number (29003783028).

Almost surely, 2^77343421406 is an apocalyptic number.

77343421406 is a deficient number, since it is larger than the sum of its proper divisors (38671710706).

77343421406 is a wasteful number, since it uses less digits than its factorization.

77343421406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38671710705.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 77343421406 in words is "seventy-seven billion, three hundred forty-three million, four hundred twenty-one thousand, four hundred six".