2605165761630 has 32 divisors (see below), whose sum is σ = 6253720308000. Its totient is φ = 694563927552.

The previous prime is 2605165761629. The next prime is 2605165761641. The reversal of 2605165761630 is 361675615062.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2605165761630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9039655 + ... + 9323394.

It is an arithmetic number, because the mean of its divisors is an integer number (195428759625).

Almost surely, 2^{2605165761630} is an apocalyptic number.

2605165761630 is an abundant number, since it is smaller than the sum of its proper divisors (3648554546370).

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

2605165761630 is a wasteful number, since it uses less digits than its factorization.

2605165761630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18367788.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 2605165761630 in words is "two trillion, six hundred five billion, one hundred sixty-five million, seven hundred sixty-one thousand, six hundred thirty".