77702442628 has 12 divisors (see below), whose sum is σ = 136239276880. Its totient is φ = 38776934952.

The previous prime is 77702442613. The next prime is 77702442637. The reversal of 77702442628 is 82624420777.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 18569238 + ... + 18573421.

Almost surely, 2^77702442628 is an apocalyptic number.

It is an amenable number.

77702442628 is a deficient number, since it is larger than the sum of its proper divisors (58536834252).

77702442628 is a wasteful number, since it uses less digits than its factorization.

77702442628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37143186 (or 37143184 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 49.

The spelling of 77702442628 in words is "seventy-seven billion, seven hundred two million, four hundred forty-two thousand, six hundred twenty-eight".