253453203545 has 32 divisors (see below), whose sum is σ = 311567731200. Its totient is φ = 197878576896.

The previous prime is 253453203539. The next prime is 253453203547. The reversal of 253453203545 is 545302354352.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 253453203545 - 2⁶ = 253453203481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253453203547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15764771 + ... + 15780839.

It is an arithmetic number, because the mean of its divisors is an integer number (9736491600).

Almost surely, 2^253453203545 is an apocalyptic number.

It is an amenable number.

253453203545 is a deficient number, since it is larger than the sum of its proper divisors (58114527655).

253453203545 is a wasteful number, since it uses less digits than its factorization.

253453203545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16577.

The product of its (nonzero) digits is 1080000, while the sum is 41.

Adding to 253453203545 its reverse (545302354352), we get a palindrome (798755557897).

The spelling of 253453203545 in words is "two hundred fifty-three billion, four hundred fifty-three million, two hundred three thousand, five hundred forty-five".