253537606509 has 8 divisors (see below), whose sum is σ = 368781973152. Its totient is φ = 153659155440.

The previous prime is 253537606457. The next prime is 253537606537. The reversal of 253537606509 is 905606735352.

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

It is not a de Polignac number, because 253537606509 - 2¹⁶ = 253537540973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253537606549) 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, 3841478854 + ... + 3841478919.

It is an arithmetic number, because the mean of its divisors is an integer number (46097746644).

Almost surely, 2^253537606509 is an apocalyptic number.

It is an amenable number.

253537606509 is a deficient number, since it is larger than the sum of its proper divisors (115244366643).

253537606509 is a wasteful number, since it uses less digits than its factorization.

253537606509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7682957787.

The product of its (nonzero) digits is 5103000, while the sum is 51.

The spelling of 253537606509 in words is "two hundred fifty-three billion, five hundred thirty-seven million, six hundred six thousand, five hundred nine".