1288253653450 has 48 divisors (see below), whose sum is σ = 2403727948440. Its totient is φ = 513673758720.

The previous prime is 1288253653429. The next prime is 1288253653451. The reversal of 1288253653450 is 543563528821.

It can be written as a sum of positive squares in 12 ways, for example, as 82976835249 + 1205276818201 = 288057^2 + 1097851^2 .

It is not an unprimeable number, because it can be changed into a prime (1288253653451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34544014 + ... + 34581286.

Almost surely, 2^{1288253653450} is an apocalyptic number.

1288253653450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1288253653450 is a deficient number, since it is larger than the sum of its proper divisors (1115474294990).

1288253653450 is a wasteful number, since it uses less digits than its factorization.

1288253653450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39451 (or 39446 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 52.

The spelling of 1288253653450 in words is "one trillion, two hundred eighty-eight billion, two hundred fifty-three million, six hundred fifty-three thousand, four hundred fifty".