415640223421 has 2 divisors, whose sum is σ = 415640223422. Its totient is φ = 415640223420.

The previous prime is 415640223407. The next prime is 415640223463. The reversal of 415640223421 is 124322046514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247610736025 + 168029487396 = 497605^2 + 409914^2 .

It is a cyclic number.

It is not a de Polignac number, because 415640223421 - 2¹³ = 415640215229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (415640220421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207820111710 + 207820111711.

It is an arithmetic number, because the mean of its divisors is an integer number (207820111711).

Almost surely, 2^415640223421 is an apocalyptic number.

It is an amenable number.

415640223421 is a deficient number, since it is larger than the sum of its proper divisors (1).

415640223421 is an equidigital number, since it uses as much as digits as its factorization.

415640223421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 415640223421 its reverse (124322046514), we get a palindrome (539962269935).

The spelling of 415640223421 in words is "four hundred fifteen billion, six hundred forty million, two hundred twenty-three thousand, four hundred twenty-one".