253421033340555 has 12 divisors (see below), whose sum is σ = 439263124457040. Its totient is φ = 135157884448272.

The previous prime is 253421033340457. The next prime is 253421033340569. The reversal of 253421033340555 is 555043330124352.

253421033340555 is a `hidden beast` number, since 2 + 5 + 3 + 4 + 21 + 0 + 3 + 33 + 40 + 555 = 666.

It is not a de Polignac number, because 253421033340555 - 2¹¹ = 253421033338507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5631578518679 = 253421033340555 / (2 + 5 + 3 + 4 + 2 + 1 + 0 + 3 + 3 + 3 + 4 + 0 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 253421033340555.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2815789259295 + ... + 2815789259384.

It is an arithmetic number, because the mean of its divisors is an integer number (36605260371420).

Almost surely, 2^{253421033340555} is an apocalyptic number.

253421033340555 is a deficient number, since it is larger than the sum of its proper divisors (185842091116485).

253421033340555 is a wasteful number, since it uses less digits than its factorization.

253421033340555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631578518690 (or 5631578518687 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 45.

The spelling of 253421033340555 in words is "two hundred fifty-three trillion, four hundred twenty-one billion, thirty-three million, three hundred forty thousand, five hundred fifty-five".