1351551233555 has 4 divisors (see below), whose sum is σ = 1621861480272. Its totient is φ = 1081240986840.

The previous prime is 1351551233537. The next prime is 1351551233567. The reversal of 1351551233555 is 5553321551531.

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

It is not a de Polignac number, because 1351551233555 - 2¹⁸ = 1351550971411 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135155123351 + ... + 135155123360.

It is an arithmetic number, because the mean of its divisors is an integer number (405465370068).

Almost surely, 2^{1351551233555} is an apocalyptic number.

1351551233555 is a deficient number, since it is larger than the sum of its proper divisors (270310246717).

1351551233555 is an equidigital number, since it uses as much as digits as its factorization.

1351551233555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270310246716.

The product of its digits is 843750, while the sum is 44.

The spelling of 1351551233555 in words is "one trillion, three hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-three thousand, five hundred fifty-five".