253643451674 has 4 divisors (see below), whose sum is σ = 380465177514. Its totient is φ = 126821725836.

The previous prime is 253643451673. The next prime is 253643451679. The reversal of 253643451674 is 476154346352.

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

It can be written as a sum of positive squares in only one way, i.e., 179346321049 + 74297130625 = 423493^2 + 272575^2 .

It is not an unprimeable number, because it can be changed into a prime (253643451673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63410862917 + ... + 63410862920.

Almost surely, 2^253643451674 is an apocalyptic number.

253643451674 is a deficient number, since it is larger than the sum of its proper divisors (126821725840).

253643451674 is a wasteful number, since it uses less digits than its factorization.

253643451674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126821725839.

The product of its digits is 7257600, while the sum is 50.

The spelling of 253643451674 in words is "two hundred fifty-three billion, six hundred forty-three million, four hundred fifty-one thousand, six hundred seventy-four".