1253413220043 has 4 divisors (see below), whose sum is σ = 1671217626728. Its totient is φ = 835608813360.

The previous prime is 1253413220009. The next prime is 1253413220047. The reversal of 1253413220043 is 3400223143521.

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

It is not a de Polignac number, because 1253413220043 - 2¹³ = 1253413211851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253413220047) 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, 208902203338 + ... + 208902203343.

It is an arithmetic number, because the mean of its divisors is an integer number (417804406682).

Almost surely, 2^{1253413220043} is an apocalyptic number.

1253413220043 is a deficient number, since it is larger than the sum of its proper divisors (417804406685).

1253413220043 is an equidigital number, since it uses as much as digits as its factorization.

1253413220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417804406684.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 1253413220043 its reverse (3400223143521), we get a palindrome (4653636363564).

The spelling of 1253413220043 in words is "one trillion, two hundred fifty-three billion, four hundred thirteen million, two hundred twenty thousand, forty-three".