1288949328353 has 4 divisors (see below), whose sum is σ = 1292196052500. Its totient is φ = 1285702604208.

The previous prime is 1288949328311. The next prime is 1288949328391. The reversal of 1288949328353 is 3538239498821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 981381478609 + 307567849744 = 990647^2 + 554588^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288949328353 - 2¹⁶ = 1288949262817 is a prime.

It is a super-2 number, since 2×1288949328353² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288949328353.

It is not an unprimeable number, because it can be changed into a prime (1288949328853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623361478 + ... + 1623362271.

It is an arithmetic number, because the mean of its divisors is an integer number (323049013125).

Almost surely, 2^{1288949328353} is an apocalyptic number.

It is an amenable number.

1288949328353 is a deficient number, since it is larger than the sum of its proper divisors (3246724147).

1288949328353 is an equidigital number, since it uses as much as digits as its factorization.

1288949328353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246724146.

The product of its digits is 89579520, while the sum is 65.

The spelling of 1288949328353 in words is "one trillion, two hundred eighty-eight billion, nine hundred forty-nine million, three hundred twenty-eight thousand, three hundred fifty-three".