1275035516989 has 8 divisors (see below), whose sum is σ = 1373625092952. Its totient is φ = 1176518786880.

The previous prime is 1275035516959. The next prime is 1275035517037. The reversal of 1275035516989 is 9896155305721.

It can be written as a sum of positive squares in 4 ways, for example, as 52978228900 + 1222057288089 = 230170^2 + 1105467^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1275035516989 - 2¹¹ = 1275035514941 is a prime.

It is a super-2 number, since 2×1275035516989² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275035516939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18175102 + ... + 18245119.

It is an arithmetic number, because the mean of its divisors is an integer number (171703136619).

Almost surely, 2^{1275035516989} is an apocalyptic number.

It is an amenable number.

1275035516989 is a deficient number, since it is larger than the sum of its proper divisors (98589575963).

1275035516989 is a wasteful number, since it uses less digits than its factorization.

1275035516989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36422927.

The product of its (nonzero) digits is 20412000, while the sum is 61.

The spelling of 1275035516989 in words is "one trillion, two hundred seventy-five billion, thirty-five million, five hundred sixteen thousand, nine hundred eighty-nine".