642102263137 has 16 divisors (see below), whose sum is σ = 692486174592. Its totient is φ = 593194819840.

The previous prime is 642102263057. The next prime is 642102263167. The reversal of 642102263137 is 731362201246.

It is a cyclic number.

It is not a de Polignac number, because 642102263137 - 2⁷ = 642102263009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 642102263096 and 642102263105.

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 15 ways as a sum of consecutive naturals, for example, 897778 + ... + 1445755.

It is an arithmetic number, because the mean of its divisors is an integer number (43280385912).

Almost surely, 2^642102263137 is an apocalyptic number.

It is an amenable number.

642102263137 is a deficient number, since it is larger than the sum of its proper divisors (50383911455).

642102263137 is a wasteful number, since it uses less digits than its factorization.

642102263137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343848.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 642102263137 in words is "six hundred forty-two billion, one hundred two million, two hundred sixty-three thousand, one hundred thirty-seven".