2145152455555 has 4 divisors (see below), whose sum is σ = 2574182946672. Its totient is φ = 1716121964440.

The previous prime is 2145152455553. The next prime is 2145152455601. The reversal of 2145152455555 is 5555542515412.

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

It is not a de Polignac number, because 2145152455555 - 2¹ = 2145152455553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145152455499 and 2145152455508.

It is not an unprimeable number, because it can be changed into a prime (2145152455553) 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, 214515245551 + ... + 214515245560.

It is an arithmetic number, because the mean of its divisors is an integer number (643545736668).

Almost surely, 2^{2145152455555} is an apocalyptic number.

2145152455555 is a deficient number, since it is larger than the sum of its proper divisors (429030491117).

2145152455555 is an equidigital number, since it uses as much as digits as its factorization.

2145152455555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429030491116.

The product of its digits is 5000000, while the sum is 49.

The spelling of 2145152455555 in words is "two trillion, one hundred forty-five billion, one hundred fifty-two million, four hundred fifty-five thousand, five hundred fifty-five".