253230532321818 has 16 divisors (see below), whose sum is σ = 523925239286880. Its totient is φ = 81499481666736.

The previous prime is 253230532321757. The next prime is 253230532321861. The reversal of 253230532321818 is 818123235032352.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727673943280 + ... + 727673943627.

It is an arithmetic number, because the mean of its divisors is an integer number (32745327455430).

Almost surely, 2^{253230532321818} is an apocalyptic number.

253230532321818 is an abundant number, since it is smaller than the sum of its proper divisors (270694706965062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253230532321818 is a wasteful number, since it uses less digits than its factorization.

253230532321818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455347886941.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 253230532321818 in words is "two hundred fifty-three trillion, two hundred thirty billion, five hundred thirty-two million, three hundred twenty-one thousand, eight hundred eighteen".