253533345512 has 8 divisors (see below), whose sum is σ = 475375022850. Its totient is φ = 126766672752.

The previous prime is 253533345511. The next prime is 253533345563. The reversal of 253533345512 is 215543335352.

It can be written as a sum of positive squares in only one way, i.e., 135531477316 + 118001868196 = 368146^2 + 343514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 253533345512.

It is not an unprimeable number, because it can be changed into a prime (253533345511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15845834087 + ... + 15845834102.

Almost surely, 2^253533345512 is an apocalyptic number.

It is an amenable number.

253533345512 is a deficient number, since it is larger than the sum of its proper divisors (221841677338).

253533345512 is a wasteful number, since it uses less digits than its factorization.

253533345512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31691668195 (or 31691668191 counting only the distinct ones).

The product of its digits is 810000, while the sum is 41.

The spelling of 253533345512 in words is "two hundred fifty-three billion, five hundred thirty-three million, three hundred forty-five thousand, five hundred twelve".