635034145306421 has 4 divisors (see below), whose sum is σ = 725753308921632. Its totient is φ = 544314981691212.

The previous prime is 635034145306417. The next prime is 635034145306447. The reversal of 635034145306421 is 124603541430536.

It is a happy number.

635034145306421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 635034145306421 - 2² = 635034145306417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635034145306321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45359581807595 + ... + 45359581807608.

It is an arithmetic number, because the mean of its divisors is an integer number (181438327230408).

Almost surely, 2^{635034145306421} is an apocalyptic number.

It is an amenable number.

635034145306421 is a deficient number, since it is larger than the sum of its proper divisors (90719163615211).

635034145306421 is an equidigital number, since it uses as much as digits as its factorization.

635034145306421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90719163615210.

The product of its (nonzero) digits is 3110400, while the sum is 47.

Adding to 635034145306421 its reverse (124603541430536), we get a palindrome (759637686736957).

The spelling of 635034145306421 in words is "six hundred thirty-five trillion, thirty-four billion, one hundred forty-five million, three hundred six thousand, four hundred twenty-one".