253357443461 has 4 divisors (see below), whose sum is σ = 254757208524. Its totient is φ = 251957678400.

The previous prime is 253357443403. The next prime is 253357443497. The reversal of 253357443461 is 164344753352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9588130561 + 243769312900 = 97919^2 + 493730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253357443461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253357443761) 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, 699882260 + ... + 699882621.

It is an arithmetic number, because the mean of its divisors is an integer number (63689302131).

Almost surely, 2^253357443461 is an apocalyptic number.

It is an amenable number.

253357443461 is a deficient number, since it is larger than the sum of its proper divisors (1399765063).

253357443461 is a wasteful number, since it uses less digits than its factorization.

253357443461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399765062.

The product of its digits is 3628800, while the sum is 47.

The spelling of 253357443461 in words is "two hundred fifty-three billion, three hundred fifty-seven million, four hundred forty-three thousand, four hundred sixty-one".