253434403386 has 24 divisors (see below), whose sum is σ = 549156116340. Its totient is φ = 84470712576.

The previous prime is 253434403153. The next prime is 253434403393. The reversal of 253434403386 is 683304434352.

253434403386 is a `hidden beast` number, since 2 + 534 + 3 + 4 + 4 + 0 + 33 + 86 = 666.

253434403386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 249731072361 + 3703331025 = 499731^2 + 60855^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405945 + ... + 819548.

Almost surely, 2^253434403386 is an apocalyptic number.

253434403386 is an abundant number, since it is smaller than the sum of its proper divisors (295721712954).

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

253434403386 is a wasteful number, since it uses less digits than its factorization.

253434403386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236990 (or 1236987 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 45.

The spelling of 253434403386 in words is "two hundred fifty-three billion, four hundred thirty-four million, four hundred three thousand, three hundred eighty-six".