77923548706 has 4 divisors (see below), whose sum is σ = 116885323062. Its totient is φ = 38961774352.

The previous prime is 77923548697. The next prime is 77923548721. The reversal of 77923548706 is 60784532977.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59983357225 + 17940191481 = 244915^2 + 133941^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 19480887175 + ... + 19480887178.

Almost surely, 2^77923548706 is an apocalyptic number.

77923548706 is a deficient number, since it is larger than the sum of its proper divisors (38961774356).

77923548706 is a wasteful number, since it uses less digits than its factorization.

77923548706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38961774355.

The product of its (nonzero) digits is 17781120, while the sum is 58.

The spelling of 77923548706 in words is "seventy-seven billion, nine hundred twenty-three million, five hundred forty-eight thousand, seven hundred six".