1270426516065 has 48 divisors (see below), whose sum is σ = 2516812092288. Its totient is φ = 580730024448.

The previous prime is 1270426516049. The next prime is 1270426516111. The reversal of 1270426516065 is 5606156240721.

1270426516065 is a `hidden beast` number, since 1 + 2 + 7 + 0 + 426 + 5 + 160 + 65 = 666.

It is not a de Polignac number, because 1270426516065 - 2⁴ = 1270426516049 is a prime.

It is a super-2 number, since 2×1270426516065² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1270426516065.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5275977 + ... + 5511513.

It is an arithmetic number, because the mean of its divisors is an integer number (52433585256).

Almost surely, 2^{1270426516065} is an apocalyptic number.

1270426516065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1270426516065 is a deficient number, since it is larger than the sum of its proper divisors (1246385576223).

1270426516065 is a wasteful number, since it uses less digits than its factorization.

1270426516065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252678 (or 252675 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 1270426516065 in words is "one trillion, two hundred seventy billion, four hundred twenty-six million, five hundred sixteen thousand, sixty-five".