2009612566 has 16 divisors (see below), whose sum is σ = 3275030304. Its totient is φ = 919304064.

The previous prime is 2009612543. The next prime is 2009612573. The reversal of 2009612566 is 6652169002.

It is a congruent number.

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, 339066 + ... + 344941.

It is an arithmetic number, because the mean of its divisors is an integer number (204689394).

Almost surely, 2^2009612566 is an apocalyptic number.

2009612566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2009612566 is a deficient number, since it is larger than the sum of its proper divisors (1265417738).

2009612566 is a wasteful number, since it uses less digits than its factorization.

2009612566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684135.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2009612566 is about 44828.7024795499. The cubic root of 2009612566 is about 1261.9363370294.

The spelling of 2009612566 in words is "two billion, nine million, six hundred twelve thousand, five hundred sixty-six".