253451557544 has 8 divisors (see below), whose sum is σ = 475221670410. Its totient is φ = 126725778768.

The previous prime is 253451557529. The next prime is 253451557571. The reversal of 253451557544 is 445755154352.

It is a happy number.

253451557544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 129996302500 + 123455255044 = 360550^2 + 351362^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 253451557492 and 253451557501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15840722339 + ... + 15840722354.

Almost surely, 2^253451557544 is an apocalyptic number.

It is an amenable number.

253451557544 is a deficient number, since it is larger than the sum of its proper divisors (221770112866).

253451557544 is a wasteful number, since it uses less digits than its factorization.

253451557544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31681444699 (or 31681444695 counting only the distinct ones).

The product of its digits is 8400000, while the sum is 50.

The spelling of 253451557544 in words is "two hundred fifty-three billion, four hundred fifty-one million, five hundred fifty-seven thousand, five hundred forty-four".