2561140970 has 8 divisors (see below), whose sum is σ = 4610053764. Its totient is φ = 1024456384.

The previous prime is 2561140963. The next prime is 2561140991. The reversal of 2561140970 is 790411652.

It can be written as a sum of positive squares in 2 ways, for example, as 2466214921 + 94926049 = 49661^2 + 9743^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2561140970.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128057039 + ... + 128057058.

Almost surely, 2^2561140970 is an apocalyptic number.

2561140970 is a deficient number, since it is larger than the sum of its proper divisors (2048912794).

2561140970 is a wasteful number, since it uses less digits than its factorization.

2561140970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256114104.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 2561140970 is about 50607.7165064775. The cubic root of 2561140970 is about 1368.1839595783.

The spelling of 2561140970 in words is "two billion, five hundred sixty-one million, one hundred forty thousand, nine hundred seventy".