265275556656551 has 8 divisors (see below), whose sum is σ = 303172173242400. Its totient is φ = 227378967193728.

The previous prime is 265275556656493. The next prime is 265275556656571. The reversal of 265275556656551 is 155656655572562.

265275556656551 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-265275556656551 is a prime.

It is a super-2 number, since 2×265275556656551² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265275556656571) 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, 22753115 + ... + 32376771.

It is an arithmetic number, because the mean of its divisors is an integer number (37896521655300).

Almost surely, 2^{265275556656551} is an apocalyptic number.

265275556656551 is a deficient number, since it is larger than the sum of its proper divisors (37896616585849).

265275556656551 is an equidigital number, since it uses as much as digits as its factorization.

265275556656551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13561513.

The product of its digits is 2835000000, while the sum is 71.

The spelling of 265275556656551 in words is "two hundred sixty-five trillion, two hundred seventy-five billion, five hundred fifty-six million, six hundred fifty-six thousand, five hundred fifty-one".