253944775018 has 8 divisors (see below), whose sum is σ = 415545995520. Its totient is φ = 115429443180.

The previous prime is 253944775013. The next prime is 253944775033. The reversal of 253944775018 is 810577449352.

253944775018 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 253944775018.

It is not an unprimeable number, because it can be changed into a prime (253944775013) 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, 5771472138 + ... + 5771472181.

It is an arithmetic number, because the mean of its divisors is an integer number (51943249440).

Almost surely, 2^253944775018 is an apocalyptic number.

253944775018 is a deficient number, since it is larger than the sum of its proper divisors (161601220502).

253944775018 is a wasteful number, since it uses less digits than its factorization.

253944775018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11542944332.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 253944775018 in words is "two hundred fifty-three billion, nine hundred forty-four million, seven hundred seventy-five thousand, eighteen".