672426003104621 has 2 divisors, whose sum is σ = 672426003104622. Its totient is φ = 672426003104620.

The previous prime is 672426003104593. The next prime is 672426003104623. The reversal of 672426003104621 is 126401300624276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337376591138596 + 335049411966025 = 18367814^2 + 18304355^2 .

It is a cyclic number.

It is not a de Polignac number, because 672426003104621 - 2¹⁴ = 672426003088237 is a prime.

Together with 672426003104623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672426003104623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336213001552310 + 336213001552311.

It is an arithmetic number, because the mean of its divisors is an integer number (336213001552311).

Almost surely, 2^{672426003104621} is an apocalyptic number.

It is an amenable number.

672426003104621 is a deficient number, since it is larger than the sum of its proper divisors (1).

672426003104621 is an equidigital number, since it uses as much as digits as its factorization.

672426003104621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 44.

Adding to 672426003104621 its reverse (126401300624276), we get a palindrome (798827303728897).

The spelling of 672426003104621 in words is "six hundred seventy-two trillion, four hundred twenty-six billion, three million, one hundred four thousand, six hundred twenty-one".