253500423655 has 4 divisors (see below), whose sum is σ = 304200508392. Its totient is φ = 202800338920.

The previous prime is 253500423623. The next prime is 253500423677. The reversal of 253500423655 is 556324005352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253500423655 - 2⁵ = 253500423623 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25350042361 + ... + 25350042370.

It is an arithmetic number, because the mean of its divisors is an integer number (76050127098).

Almost surely, 2^253500423655 is an apocalyptic number.

253500423655 is a deficient number, since it is larger than the sum of its proper divisors (50700084737).

253500423655 is an equidigital number, since it uses as much as digits as its factorization.

253500423655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50700084736.

The product of its (nonzero) digits is 540000, while the sum is 40.

The spelling of 253500423655 in words is "two hundred fifty-three billion, five hundred million, four hundred twenty-three thousand, six hundred fifty-five".