77064546628 has 12 divisors (see below), whose sum is σ = 134980134912. Its totient is φ = 38498793800.

The previous prime is 77064546619. The next prime is 77064546673. The reversal of 77064546628 is 82664546077.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8364700 + ... + 8373907.

It is an arithmetic number, because the mean of its divisors is an integer number (11248344576).

Almost surely, 2^77064546628 is an apocalyptic number.

It is an amenable number.

77064546628 is a deficient number, since it is larger than the sum of its proper divisors (57915588284).

77064546628 is a wasteful number, since it uses less digits than its factorization.

77064546628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16739762 (or 16739760 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 77064546628 in words is "seventy-seven billion, sixty-four million, five hundred forty-six thousand, six hundred twenty-eight".