2561015773 has 8 divisors (see below), whose sum is σ = 2610941760. Its totient is φ = 2511307200.

The previous prime is 2561015761. The next prime is 2561015777. The reversal of 2561015773 is 3775101652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2561015773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561015777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30465 + ... + 77782.

It is an arithmetic number, because the mean of its divisors is an integer number (326367720).

Almost surely, 2^2561015773 is an apocalyptic number.

It is an amenable number.

2561015773 is a deficient number, since it is larger than the sum of its proper divisors (49925987).

2561015773 is a wasteful number, since it uses less digits than its factorization.

2561015773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108707.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 2561015773 is about 50606.4795554878. The cubic root of 2561015773 is about 1368.1616654367.

The spelling of 2561015773 in words is "two billion, five hundred sixty-one million, fifteen thousand, seven hundred seventy-three".