78622822687 has 2 divisors, whose sum is σ = 78622822688. Its totient is φ = 78622822686.

The previous prime is 78622822667. The next prime is 78622822703.

78622822687 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 78622822687 - 2¹⁹ = 78622298399 is a prime.

It is a super-3 number, since 3×78622822687³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78622822627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39311411343 + 39311411344.

It is an arithmetic number, because the mean of its divisors is an integer number (39311411344).

Almost surely, 2^78622822687 is an apocalyptic number.

78622822687 is a deficient number, since it is larger than the sum of its proper divisors (1).

78622822687 is an equidigital number, since it uses as much as digits as its factorization.

78622822687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14450688, while the sum is 58.

The spelling of 78622822687 in words is "seventy-eight billion, six hundred twenty-two million, eight hundred twenty-two thousand, six hundred eighty-seven".