61412305421 has 2 divisors, whose sum is σ = 61412305422. Its totient is φ = 61412305420.

The previous prime is 61412305397. The next prime is 61412305429. The reversal of 61412305421 is 12450321416.

61412305421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39844152100 + 21568153321 = 199610^2 + 146861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61412305421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61412305429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30706152710 + 30706152711.

It is an arithmetic number, because the mean of its divisors is an integer number (30706152711).

Almost surely, 2^61412305421 is an apocalyptic number.

It is an amenable number.

61412305421 is a deficient number, since it is larger than the sum of its proper divisors (1).

61412305421 is an equidigital number, since it uses as much as digits as its factorization.

61412305421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 61412305421 its reverse (12450321416), we get a palindrome (73862626837).

The spelling of 61412305421 in words is "sixty-one billion, four hundred twelve million, three hundred five thousand, four hundred twenty-one".