253541045644 has 24 divisors (see below), whose sum is σ = 446721534000. Its totient is φ = 125906500800.

The previous prime is 253541045627. The next prime is 253541045647. The reversal of 253541045644 is 446540145352.

It is a self number, because there is not a number n which added to its sum of digits gives 253541045644.

It is not an unprimeable number, because it can be changed into a prime (253541045647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8202819 + ... + 8233669.

It is an arithmetic number, because the mean of its divisors is an integer number (18613397250).

Almost surely, 2^253541045644 is an apocalyptic number.

It is an amenable number.

253541045644 is a deficient number, since it is larger than the sum of its proper divisors (193180488356).

253541045644 is a wasteful number, since it uses less digits than its factorization.

253541045644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44793 (or 44791 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 253541045644 in words is "two hundred fifty-three billion, five hundred forty-one million, forty-five thousand, six hundred forty-four".