253440785433 has 32 divisors (see below), whose sum is σ = 388082672640. Its totient is φ = 145501479360.

The previous prime is 253440785431. The next prime is 253440785459. The reversal of 253440785433 is 334587044352.

It is not a de Polignac number, because 253440785433 - 2¹ = 253440785431 is a prime.

It is a super-3 number, since 3×253440785433³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (253440785431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10325091 + ... + 10349607.

It is an arithmetic number, because the mean of its divisors is an integer number (12127583520).

Almost surely, 2^253440785433 is an apocalyptic number.

It is an amenable number.

253440785433 is a deficient number, since it is larger than the sum of its proper divisors (134641887207).

253440785433 is a wasteful number, since it uses less digits than its factorization.

253440785433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41037.

The product of its (nonzero) digits is 4838400, while the sum is 48.

The spelling of 253440785433 in words is "two hundred fifty-three billion, four hundred forty million, seven hundred eighty-five thousand, four hundred thirty-three".