2652021221545 has 4 divisors (see below), whose sum is σ = 3182425465860. Its totient is φ = 2121616977232.

The previous prime is 2652021221467. The next prime is 2652021221561. The reversal of 2652021221545 is 5451221202562.

2652021221545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1666337611689 + 985683609856 = 1290867^2 + 992816^2 .

It is a cyclic number.

It is not a de Polignac number, because 2652021221545 - 2⁹ = 2652021221033 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265202122150 + ... + 265202122159.

It is an arithmetic number, because the mean of its divisors is an integer number (795606366465).

Almost surely, 2^{2652021221545} is an apocalyptic number.

It is an amenable number.

2652021221545 is a deficient number, since it is larger than the sum of its proper divisors (530404244315).

2652021221545 is an equidigital number, since it uses as much as digits as its factorization.

2652021221545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530404244314.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 2652021221545 in words is "two trillion, six hundred fifty-two billion, twenty-one million, two hundred twenty-one thousand, five hundred forty-five".