77763443607874 has 4 divisors (see below), whose sum is σ = 116645165411814. Its totient is φ = 38881721803936.

The previous prime is 77763443607823. The next prime is 77763443607881. The reversal of 77763443607874 is 47870634436777.

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., 75154595180625 + 2608848427249 = 8669175^2 + 1615193^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77763443607797 and 77763443607806.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19440860901967 + ... + 19440860901970.

Almost surely, 2^{77763443607874} is an apocalyptic number.

77763443607874 is a deficient number, since it is larger than the sum of its proper divisors (38881721803940).

77763443607874 is a wasteful number, since it uses less digits than its factorization.

77763443607874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38881721803939.

The product of its (nonzero) digits is 2788079616, while the sum is 73.

The spelling of 77763443607874 in words is "seventy-seven trillion, seven hundred sixty-three billion, four hundred forty-three million, six hundred seven thousand, eight hundred seventy-four".