1687441145253 has 4 divisors (see below), whose sum is σ = 2249921527008. Its totient is φ = 1124960763500.

The previous prime is 1687441145237. The next prime is 1687441145281. The reversal of 1687441145253 is 3525411447861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1687441145253 - 2⁴ = 1687441145237 is a prime.

It is a super-3 number, since 3×1687441145253³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1687441145196 and 1687441145205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1687441144253) 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, 281240190873 + ... + 281240190878.

It is an arithmetic number, because the mean of its divisors is an integer number (562480381752).

Almost surely, 2^{1687441145253} is an apocalyptic number.

It is an amenable number.

1687441145253 is a deficient number, since it is larger than the sum of its proper divisors (562480381755).

1687441145253 is an equidigital number, since it uses as much as digits as its factorization.

1687441145253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562480381754.

The product of its digits is 3225600, while the sum is 51.

The spelling of 1687441145253 in words is "one trillion, six hundred eighty-seven billion, four hundred forty-one million, one hundred forty-five thousand, two hundred fifty-three".