253956336838 has 16 divisors (see below), whose sum is σ = 393235743744. Its totient is φ = 122878027080.

The previous prime is 253956336797. The next prime is 253956336871. The reversal of 253956336838 is 838633659352.

253956336838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2763831 + ... + 2854237.

It is an arithmetic number, because the mean of its divisors is an integer number (24577233984).

Almost surely, 2^253956336838 is an apocalyptic number.

253956336838 is a deficient number, since it is larger than the sum of its proper divisors (139279406906).

253956336838 is a wasteful number, since it uses less digits than its factorization.

253956336838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135747.

The product of its digits is 83980800, while the sum is 61.

The spelling of 253956336838 in words is "two hundred fifty-three billion, nine hundred fifty-six million, three hundred thirty-six thousand, eight hundred thirty-eight".