642246261026502 has 48 divisors (see below), whose sum is σ = 1412176893603840. Its totient is φ = 194579182889520.

The previous prime is 642246261026497. The next prime is 642246261026521. The reversal of 642246261026502 is 205620162642246.

642246261026502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89488518 + ... + 96398585.

It is an arithmetic number, because the mean of its divisors is an integer number (29420351950080).

Almost surely, 2^{642246261026502} is an apocalyptic number.

642246261026502 is an abundant number, since it is smaller than the sum of its proper divisors (769930632577338).

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

642246261026502 is a wasteful number, since it uses less digits than its factorization.

642246261026502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185891889 (or 185891878 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 642246261026502 in words is "six hundred forty-two trillion, two hundred forty-six billion, two hundred sixty-one million, twenty-six thousand, five hundred two".