265166663264 has 96 divisors (see below), whose sum is σ = 533221460352. Its totient is φ = 129773952000.

The previous prime is 265166663243. The next prime is 265166663269. The reversal of 265166663264 is 462366661562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265166663269) 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, 348444644 + ... + 348445404.

It is an arithmetic number, because the mean of its divisors is an integer number (5554390212).

Almost surely, 2^265166663264 is an apocalyptic number.

It is an amenable number.

265166663264 is an abundant number, since it is smaller than the sum of its proper divisors (268054797088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265166663264 is a wasteful number, since it uses less digits than its factorization.

265166663264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1652 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 53.

The spelling of 265166663264 in words is "two hundred sixty-five billion, one hundred sixty-six million, six hundred sixty-three thousand, two hundred sixty-four".