1353243536251 has 4 divisors (see below), whose sum is σ = 1362979101400. Its totient is φ = 1343507971104.

The previous prime is 1353243536243. The next prime is 1353243536263. The reversal of 1353243536251 is 1526353423531.

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 1353243536251 - 2³ = 1353243536243 is a prime.

It is a super-2 number, since 2×1353243536251² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1353243536198 and 1353243536207.

It is not an unprimeable number, because it can be changed into a prime (1353243531251) 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, 4867782366 + ... + 4867782643.

It is an arithmetic number, because the mean of its divisors is an integer number (340744775350).

Almost surely, 2^{1353243536251} is an apocalyptic number.

1353243536251 is a deficient number, since it is larger than the sum of its proper divisors (9735565149).

1353243536251 is an equidigital number, since it uses as much as digits as its factorization.

1353243536251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9735565148.

The product of its digits is 972000, while the sum is 43.

Adding to 1353243536251 its reverse (1526353423531), we get a palindrome (2879596959782).

The spelling of 1353243536251 in words is "one trillion, three hundred fifty-three billion, two hundred forty-three million, five hundred thirty-six thousand, two hundred fifty-one".