642102263161 has 8 divisors (see below), whose sum is σ = 662827912448. Its totient is φ = 621377406000.

The previous prime is 642102263057. The next prime is 642102263167. The reversal of 642102263161 is 161362201246.

642102263161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642102263161 - 2²⁹ = 641565392249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642102263167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1755331 + ... + 2089351.

It is an arithmetic number, because the mean of its divisors is an integer number (82853489056).

Almost surely, 2^642102263161 is an apocalyptic number.

It is an amenable number.

642102263161 is a deficient number, since it is larger than the sum of its proper divisors (20725649287).

642102263161 is a wasteful number, since it uses less digits than its factorization.

642102263161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396063.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 642102263161 in words is "six hundred forty-two billion, one hundred two million, two hundred sixty-three thousand, one hundred sixty-one".