642030563186 has 16 divisors (see below), whose sum is σ = 964021938648. Its totient is φ = 320690016000.

The previous prime is 642030563143. The next prime is 642030563267. The reversal of 642030563186 is 681365030246.

It is a happy number.

642030563186 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 239395896961 + 402634666225 = 489281^2 + 634535^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15286976 + ... + 15328916.

Almost surely, 2^642030563186 is an apocalyptic number.

642030563186 is a deficient number, since it is larger than the sum of its proper divisors (321991375462).

642030563186 is a wasteful number, since it uses less digits than its factorization.

642030563186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49517.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 642030563186 in words is "six hundred forty-two billion, thirty million, five hundred sixty-three thousand, one hundred eighty-six".