2565739027551 has 32 divisors (see below), whose sum is σ = 3914782617600. Its totient is φ = 1464230960640.

The previous prime is 2565739027547. The next prime is 2565739027627. The reversal of 2565739027551 is 1557209375652.

2565739027551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2565739027551 - 2² = 2565739027547 is a prime.

It is a super-2 number, since 2×2565739027551² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2565739027491 and 2565739027500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565739027151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51619431 + ... + 51669111.

It is an arithmetic number, because the mean of its divisors is an integer number (122336956800).

Almost surely, 2^{2565739027551} is an apocalyptic number.

2565739027551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2565739027551 is a deficient number, since it is larger than the sum of its proper divisors (1349043590049).

2565739027551 is a wasteful number, since it uses less digits than its factorization.

2565739027551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52839.

The product of its (nonzero) digits is 19845000, while the sum is 57.

The spelling of 2565739027551 in words is "two trillion, five hundred sixty-five billion, seven hundred thirty-nine million, twenty-seven thousand, five hundred fifty-one".