2145422251552 has 48 divisors (see below), whose sum is σ = 4447050672960. Its totient is φ = 1016036566272.

The previous prime is 2145422251529. The next prime is 2145422251573. The reversal of 2145422251552 is 2551522245412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504893 + ... + 3250435.

It is an arithmetic number, because the mean of its divisors is an integer number (92646889020).

Almost surely, 2^{2145422251552} is an apocalyptic number.

It is an amenable number.

2145422251552 is an abundant number, since it is smaller than the sum of its proper divisors (2301628421408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145422251552 is a wasteful number, since it uses less digits than its factorization.

2145422251552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750305 (or 750297 counting only the distinct ones).

The product of its digits is 320000, while the sum is 40.

Adding to 2145422251552 its reverse (2551522245412), we get a palindrome (4696944496964).

The spelling of 2145422251552 in words is "two trillion, one hundred forty-five billion, four hundred twenty-two million, two hundred fifty-one thousand, five hundred fifty-two".