265645456321355 has 16 divisors (see below), whose sum is σ = 348804668406528. Its totient is φ = 192613019676000.

The previous prime is 265645456321283. The next prime is 265645456321471. The reversal of 265645456321355 is 553123654546562.

It is a de Polignac number, because none of the positive numbers 2^k-265645456321355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7295929511 + ... + 7295965920.

It is an arithmetic number, because the mean of its divisors is an integer number (21800291775408).

Almost surely, 2^{265645456321355} is an apocalyptic number.

265645456321355 is a deficient number, since it is larger than the sum of its proper divisors (83159212085173).

265645456321355 is a wasteful number, since it uses less digits than its factorization.

265645456321355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14591895778.

The product of its digits is 388800000, while the sum is 62.

The spelling of 265645456321355 in words is "two hundred sixty-five trillion, six hundred forty-five billion, four hundred fifty-six million, three hundred twenty-one thousand, three hundred fifty-five".