253404332355555 has 24 divisors (see below), whose sum is σ = 439245804825360. Its totient is φ = 135145399181760.

The previous prime is 253404332355553. The next prime is 253404332355593. The reversal of 253404332355555 is 555553233404352.

It is a happy number.

253404332355555 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 0 + 4 + 3 + 32 + 3 + 55 + 555 = 666.

It is not a de Polignac number, because 253404332355555 - 2¹ = 253404332355553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253404332355553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72824185 + ... + 76224474.

It is an arithmetic number, because the mean of its divisors is an integer number (18301908534390).

Almost surely, 2^{253404332355555} is an apocalyptic number.

253404332355555 is a deficient number, since it is larger than the sum of its proper divisors (185841472469805).

253404332355555 is a wasteful number, since it uses less digits than its factorization.

253404332355555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149086451 (or 149086448 counting only the distinct ones).

The product of its (nonzero) digits is 81000000, while the sum is 54.

The spelling of 253404332355555 in words is "two hundred fifty-three trillion, four hundred four billion, three hundred thirty-two million, three hundred fifty-five thousand, five hundred fifty-five".