253869545042 has 4 divisors (see below), whose sum is σ = 380804317566. Its totient is φ = 126934772520.

The previous prime is 253869545023. The next prime is 253869545051. The reversal of 253869545042 is 240545968352.

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., 181083440521 + 72786104521 = 425539^2 + 269789^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63467386259 + ... + 63467386262.

Almost surely, 2^253869545042 is an apocalyptic number.

253869545042 is a deficient number, since it is larger than the sum of its proper divisors (126934772524).

253869545042 is a wasteful number, since it uses less digits than its factorization.

253869545042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126934772523.

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 253869545042 in words is "two hundred fifty-three billion, eight hundred sixty-nine million, five hundred forty-five thousand, forty-two".