642712102553 has 16 divisors (see below), whose sum is σ = 659814517440. Its totient is φ = 625844803584.

The previous prime is 642712102531. The next prime is 642712102793. The reversal of 642712102553 is 355201217246.

It is a cyclic number.

It is not a de Polignac number, because 642712102553 - 2²⁰ = 642711053977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642712104553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2532050 + ... + 2774292.

It is an arithmetic number, because the mean of its divisors is an integer number (41238407340).

Almost surely, 2^642712102553 is an apocalyptic number.

It is an amenable number.

642712102553 is a deficient number, since it is larger than the sum of its proper divisors (17102414887).

642712102553 is a wasteful number, since it uses less digits than its factorization.

642712102553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242728.

The product of its (nonzero) digits is 100800, while the sum is 38.

Adding to 642712102553 its reverse (355201217246), we get a palindrome (997913319799).

The spelling of 642712102553 in words is "six hundred forty-two billion, seven hundred twelve million, one hundred two thousand, five hundred fifty-three".