2009191785260 has 24 divisors (see below), whose sum is σ = 4602875726736. Its totient is φ = 730615194560.

The previous prime is 2009191785257. The next prime is 2009191785371. The reversal of 2009191785260 is 625871919002.

It is a junction number, because it is equal to n+sod(n) for n = 2009191785199 and 2009191785208.

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, 4566344747 + ... + 4566345186.

It is an arithmetic number, because the mean of its divisors is an integer number (191786488614).

Almost surely, 2^{2009191785260} is an apocalyptic number.

2009191785260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009191785260 is an abundant number, since it is smaller than the sum of its proper divisors (2593683941476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009191785260 is a wasteful number, since it uses less digits than its factorization.

2009191785260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9132689953 (or 9132689951 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 2009191785260 in words is "two trillion, nine billion, one hundred ninety-one million, seven hundred eighty-five thousand, two hundred sixty".