1002153521323 has 4 divisors (see below), whose sum is σ = 1003371205648. Its totient is φ = 1000935837000.

The previous prime is 1002153521321. The next prime is 1002153521377. The reversal of 1002153521323 is 3231253512001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002153521323 - 2¹ = 1002153521321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002153521291 and 1002153521300.

It is not an unprimeable number, because it can be changed into a prime (1002153521321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 608840928 + ... + 608842573.

It is an arithmetic number, because the mean of its divisors is an integer number (250842801412).

Almost surely, 2^{1002153521323} is an apocalyptic number.

1002153521323 is a deficient number, since it is larger than the sum of its proper divisors (1217684325).

1002153521323 is an equidigital number, since it uses as much as digits as its factorization.

1002153521323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217684324.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 1002153521323 in words is "one trillion, two billion, one hundred fifty-three million, five hundred twenty-one thousand, three hundred twenty-three".