265945974793 has 16 divisors (see below), whose sum is σ = 274855109760. Its totient is φ = 257195337984.

The previous prime is 265945974757. The next prime is 265945974797. The reversal of 265945974793 is 397479549562.

It is a cyclic number.

It is not a de Polignac number, because 265945974793 - 2¹⁷ = 265945843721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265945974797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1862305 + ... + 2000017.

It is an arithmetic number, because the mean of its divisors is an integer number (17178444360).

Almost surely, 2^265945974793 is an apocalyptic number.

It is an amenable number.

265945974793 is a deficient number, since it is larger than the sum of its proper divisors (8909134967).

265945974793 is a wasteful number, since it uses less digits than its factorization.

265945974793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138288.

The product of its digits is 514382400, while the sum is 70.

The spelling of 265945974793 in words is "two hundred sixty-five billion, nine hundred forty-five million, nine hundred seventy-four thousand, seven hundred ninety-three".