1002145503253 has 2 divisors, whose sum is σ = 1002145503254. Its totient is φ = 1002145503252.

The previous prime is 1002145503223. The next prime is 1002145503263. The reversal of 1002145503253 is 3523055412001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 693967304209 + 308178199044 = 833047^2 + 555138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002145503253 - 2²⁵ = 1002111948821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002145503223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501072751626 + 501072751627.

It is an arithmetic number, because the mean of its divisors is an integer number (501072751627).

Almost surely, 2^{1002145503253} is an apocalyptic number.

It is an amenable number.

1002145503253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002145503253 is an equidigital number, since it uses as much as digits as its factorization.

1002145503253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 1002145503253 in words is "one trillion, two billion, one hundred forty-five million, five hundred three thousand, two hundred fifty-three".