642356455602 has 32 divisors (see below), whose sum is σ = 1285804461312. Its totient is φ = 213936964304.

The previous prime is 642356455591. The next prime is 642356455649. The reversal of 642356455602 is 206554653246.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78841693 + ... + 78849839.

It is an arithmetic number, because the mean of its divisors is an integer number (40181389416).

Almost surely, 2^642356455602 is an apocalyptic number.

642356455602 is an abundant number, since it is smaller than the sum of its proper divisors (643448005710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642356455602 is a wasteful number, since it uses less digits than its factorization.

642356455602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17702.

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 642356455602 in words is "six hundred forty-two billion, three hundred fifty-six million, four hundred fifty-five thousand, six hundred two".