77373624644 has 12 divisors (see below), whose sum is σ = 136000337424. Its totient is φ = 38516385384.

The previous prime is 77373624637. The next prime is 77373624649. The reversal of 77373624644 is 44642637377.

It is not an unprimeable number, because it can be changed into a prime (77373624649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42605714 + ... + 42607529.

It is an arithmetic number, because the mean of its divisors is an integer number (11333361452).

Almost surely, 2^77373624644 is an apocalyptic number.

It is an amenable number.

77373624644 is a deficient number, since it is larger than the sum of its proper divisors (58626712780).

77373624644 is a wasteful number, since it uses less digits than its factorization.

77373624644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85213474 (or 85213472 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 53.

The spelling of 77373624644 in words is "seventy-seven billion, three hundred seventy-three million, six hundred twenty-four thousand, six hundred forty-four".