253903424561 has 8 divisors (see below), whose sum is σ = 255035952000. Its totient is φ = 252773260480.

The previous prime is 253903424543. The next prime is 253903424597. The reversal of 253903424561 is 165424309352.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 253903424561 - 2¹⁰ = 253903423537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253903424461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375320 + ... + 805401.

It is an arithmetic number, because the mean of its divisors is an integer number (31879494000).

Almost surely, 2^253903424561 is an apocalyptic number.

It is an amenable number.

253903424561 is a deficient number, since it is larger than the sum of its proper divisors (1132527439).

253903424561 is a wasteful number, since it uses less digits than its factorization.

253903424561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181679.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 253903424561 in words is "two hundred fifty-three billion, nine hundred three million, four hundred twenty-four thousand, five hundred sixty-one".