8420622420673 has 4 divisors (see below), whose sum is σ = 8420628269488. Its totient is φ = 8420616571860.

The previous prime is 8420622420619. The next prime is 8420622420697. The reversal of 8420622420673 is 3760242260248.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8420622420673 - 2¹⁷ = 8420622289601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8420622427673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918190 + ... + 4205272.

It is an arithmetic number, because the mean of its divisors is an integer number (2105157067372).

Almost surely, 2^{8420622420673} is an apocalyptic number.

It is an amenable number.

8420622420673 is a deficient number, since it is larger than the sum of its proper divisors (5848815).

8420622420673 is a wasteful number, since it uses less digits than its factorization.

8420622420673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848814.

The product of its (nonzero) digits is 1548288, while the sum is 46.

It can be divided in two parts, 842062 and 2420673, that added together give a triangular number (3262735 = T₂₅₅₄).

The spelling of 8420622420673 in words is "eight trillion, four hundred twenty billion, six hundred twenty-two million, four hundred twenty thousand, six hundred seventy-three".