1264000265265 has 8 divisors (see below), whose sum is σ = 2022400424448. Its totient is φ = 674133474800.

The previous prime is 1264000265257. The next prime is 1264000265303. The reversal of 1264000265265 is 5625620004621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1264000265265 - 2³ = 1264000265257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42133342161 + ... + 42133342190.

It is an arithmetic number, because the mean of its divisors is an integer number (252800053056).

Almost surely, 2^{1264000265265} is an apocalyptic number.

1264000265265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1264000265265 is a deficient number, since it is larger than the sum of its proper divisors (758400159183).

1264000265265 is an equidigital number, since it uses as much as digits as its factorization.

1264000265265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84266684359.

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 1264000265265 its reverse (5625620004621), we get a palindrome (6889620269886).

The spelling of 1264000265265 in words is "one trillion, two hundred sixty-four billion, two hundred sixty-five thousand, two hundred sixty-five".