77422622477 has 4 divisors (see below), whose sum is σ = 78146198496. Its totient is φ = 76699046460.

The previous prime is 77422622467. The next prime is 77422622483.

It is a happy number.

77422622477 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 77422622477 - 2¹² = 77422618381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77422622467) 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, 361787849 + ... + 361788062.

It is an arithmetic number, because the mean of its divisors is an integer number (19536549624).

Almost surely, 2^77422622477 is an apocalyptic number.

It is an amenable number.

77422622477 is a deficient number, since it is larger than the sum of its proper divisors (723576019).

77422622477 is a wasteful number, since it uses less digits than its factorization.

77422622477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723576018.

The product of its digits is 3687936, while the sum is 50.

The spelling of 77422622477 in words is "seventy-seven billion, four hundred twenty-two million, six hundred twenty-two thousand, four hundred seventy-seven".