77443000001 has 4 divisors (see below), whose sum is σ = 77455215552. Its totient is φ = 77430784452.

The previous prime is 77442999983. The next prime is 77443000007. The reversal of 77443000001 is 10000034477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10000034477 = 47 ⋅212766691.

It is a cyclic number.

It is not a de Polignac number, because 77443000001 - 2³⁰ = 76369258177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77443000007) 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, 6098261 + ... + 6110946.

It is an arithmetic number, because the mean of its divisors is an integer number (19363803888).

Almost surely, 2^77443000001 is an apocalyptic number.

It is an amenable number.

77443000001 is a deficient number, since it is larger than the sum of its proper divisors (12215551).

77443000001 is a wasteful number, since it uses less digits than its factorization.

77443000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12215550.

The product of its (nonzero) digits is 2352, while the sum is 26.

Adding to 77443000001 its reverse (10000034477), we get a palindrome (87443034478).

The spelling of 77443000001 in words is "seventy-seven billion, four hundred forty-three million, one", and thus it is an aban number.