265857997964 has 12 divisors (see below), whose sum is σ = 501040073184. Its totient is φ = 122703691344.

The previous prime is 265857997963. The next prime is 265857998011. The reversal of 265857997964 is 469799758562.

It is not an unprimeable number, because it can be changed into a prime (265857997963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556326852 + ... + 2556326955.

It is an arithmetic number, because the mean of its divisors is an integer number (41753339432).

Almost surely, 2^265857997964 is an apocalyptic number.

It is an amenable number.

265857997964 is a deficient number, since it is larger than the sum of its proper divisors (235182075220).

265857997964 is a wasteful number, since it uses less digits than its factorization.

265857997964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112653824 (or 5112653822 counting only the distinct ones).

The product of its digits is 2057529600, while the sum is 77.

The spelling of 265857997964 in words is "two hundred sixty-five billion, eight hundred fifty-seven million, nine hundred ninety-seven thousand, nine hundred sixty-four".