1265645340460 has 48 divisors (see below), whose sum is σ = 2718527767200. Its totient is φ = 494800661504.

The previous prime is 1265645340431. The next prime is 1265645340499. The reversal of 1265645340460 is 640435465621.

It is a self number, because there is not a number n which added to its sum of digits gives 1265645340460.

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, 2895805 + ... + 3304084.

It is an arithmetic number, because the mean of its divisors is an integer number (56635995150).

Almost surely, 2^{1265645340460} is an apocalyptic number.

1265645340460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265645340460 is an abundant number, since it is smaller than the sum of its proper divisors (1452882426740).

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

1265645340460 is a wasteful number, since it uses less digits than its factorization.

1265645340460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200130 (or 6200128 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 1265645340460 in words is "one trillion, two hundred sixty-five billion, six hundred forty-five million, three hundred forty thousand, four hundred sixty".