209130372903742 has 16 divisors (see below), whose sum is σ = 315103047612192. Its totient is φ = 104097060524800.

The previous prime is 209130372903671. The next prime is 209130372903743. The reversal of 209130372903742 is 247309273031902.

It is a super-2 number, since 2×209130372903742² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 209130372903742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209130372903743) 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, 258802423 + ... + 259609234.

It is an arithmetic number, because the mean of its divisors is an integer number (19693940475762).

Almost surely, 2^{209130372903742} is an apocalyptic number.

209130372903742 is a deficient number, since it is larger than the sum of its proper divisors (105972674708450).

209130372903742 is a wasteful number, since it uses less digits than its factorization.

209130372903742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518412563.

The product of its (nonzero) digits is 3429216, while the sum is 52.

The spelling of 209130372903742 in words is "two hundred nine trillion, one hundred thirty billion, three hundred seventy-two million, nine hundred three thousand, seven hundred forty-two".