202660217139 has 4 divisors (see below), whose sum is σ = 270213622856. Its totient is φ = 135106811424.

The previous prime is 202660217117. The next prime is 202660217143. The reversal of 202660217139 is 931712066202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 202660217139 - 2¹⁵ = 202660184371 is a prime.

It is a super-2 number, since 2×202660217139² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202660217097 and 202660217106.

It is not an unprimeable number, because it can be changed into a prime (202660217159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33776702854 + ... + 33776702859.

It is an arithmetic number, because the mean of its divisors is an integer number (67553405714).

Almost surely, 2^202660217139 is an apocalyptic number.

202660217139 is a deficient number, since it is larger than the sum of its proper divisors (67553405717).

202660217139 is an equidigital number, since it uses as much as digits as its factorization.

202660217139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67553405716.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 202660217139 in words is "two hundred two billion, six hundred sixty million, two hundred seventeen thousand, one hundred thirty-nine".