421746177607 has 2 divisors, whose sum is σ = 421746177608. Its totient is φ = 421746177606.

The previous prime is 421746177557. The next prime is 421746177653. The reversal of 421746177607 is 706771647124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421746177607 is a prime.

It is a super-2 number, since 2×421746177607² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421746177007) 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 as a sum of consecutive naturals, namely, 210873088803 + 210873088804.

It is an arithmetic number, because the mean of its divisors is an integer number (210873088804).

Almost surely, 2^421746177607 is an apocalyptic number.

421746177607 is a deficient number, since it is larger than the sum of its proper divisors (1).

421746177607 is an equidigital number, since it uses as much as digits as its factorization.

421746177607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2765952, while the sum is 52.

The spelling of 421746177607 in words is "four hundred twenty-one billion, seven hundred forty-six million, one hundred seventy-seven thousand, six hundred seven".