642225606437353 has 4 divisors (see below), whose sum is σ = 642251120967568. Its totient is φ = 642200091907140.

The previous prime is 642225606437341. The next prime is 642225606437383. The reversal of 642225606437353 is 353734606522246.

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 642225606437353 - 2⁵ = 642225606437321 is a prime.

It is a super-2 number, since 2×642225606437353² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642225606437383) 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, 12757227351 + ... + 12757277692.

It is an arithmetic number, because the mean of its divisors is an integer number (160562780241892).

Almost surely, 2^{642225606437353} is an apocalyptic number.

It is an amenable number.

642225606437353 is a deficient number, since it is larger than the sum of its proper divisors (25514530215).

642225606437353 is a wasteful number, since it uses less digits than its factorization.

642225606437353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514530214.

The product of its (nonzero) digits is 130636800, while the sum is 58.

The spelling of 642225606437353 in words is "six hundred forty-two trillion, two hundred twenty-five billion, six hundred six million, four hundred thirty-seven thousand, three hundred fifty-three".