2561053528553 has 8 divisors (see below), whose sum is σ = 2759434637568. Its totient is φ = 2362869132624.

The previous prime is 2561053528511. The next prime is 2561053528559. The reversal of 2561053528553 is 3558253501652.

2561053528553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-2561053528553 is a prime.

It is a super-2 number, since 2×2561053528553² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561053528559) 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, 49151225 + ... + 49203302.

It is an arithmetic number, because the mean of its divisors is an integer number (344929329696).

Almost surely, 2^{2561053528553} is an apocalyptic number.

It is an amenable number.

2561053528553 is a deficient number, since it is larger than the sum of its proper divisors (198381109015).

2561053528553 is a wasteful number, since it uses less digits than its factorization.

2561053528553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98356543.

The product of its (nonzero) digits is 5400000, while the sum is 50.

The spelling of 2561053528553 in words is "two trillion, five hundred sixty-one billion, fifty-three million, five hundred twenty-eight thousand, five hundred fifty-three".