421162507061 has 2 divisors, whose sum is σ = 421162507062. Its totient is φ = 421162507060.

The previous prime is 421162507019. The next prime is 421162507063. The reversal of 421162507061 is 160705261124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311928952036 + 109233555025 = 558506^2 + 330505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421162507061 is a prime.

Together with 421162507063, 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 (421162507063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210581253530 + 210581253531.

It is an arithmetic number, because the mean of its divisors is an integer number (210581253531).

Almost surely, 2^421162507061 is an apocalyptic number.

It is an amenable number.

421162507061 is a deficient number, since it is larger than the sum of its proper divisors (1).

421162507061 is an equidigital number, since it uses as much as digits as its factorization.

421162507061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 421162507061 its reverse (160705261124), we get a palindrome (581867768185).

The spelling of 421162507061 in words is "four hundred twenty-one billion, one hundred sixty-two million, five hundred seven thousand, sixty-one".