2645140052 has 6 divisors (see below), whose sum is σ = 4628995098. Its totient is φ = 1322570024.

The previous prime is 2645140049. The next prime is 2645140061. The reversal of 2645140052 is 2500415462.

It can be written as a sum of positive squares in only one way, i.e., 2392775056 + 252364996 = 48916^2 + 15886^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2645139997 and 2645140024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330642503 + ... + 330642510.

It is an arithmetic number, because the mean of its divisors is an integer number (771499183).

Almost surely, 2^2645140052 is an apocalyptic number.

It is an amenable number.

2645140052 is a deficient number, since it is larger than the sum of its proper divisors (1983855046).

2645140052 is a wasteful number, since it uses less digits than its factorization.

2645140052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661285017 (or 661285015 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2645140052 is about 51430.9250548734. The cubic root of 2645140052 is about 1382.9810325511.

The spelling of 2645140052 in words is "two billion, six hundred forty-five million, one hundred forty thousand, fifty-two".