253765138805 has 16 divisors (see below), whose sum is σ = 312765905664. Its totient is φ = 197514233280.

The previous prime is 253765138801. The next prime is 253765138873. The reversal of 253765138805 is 508831567352.

It is not a de Polignac number, because 253765138805 - 2² = 253765138801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253765138801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5194724 + ... + 5243346.

It is an arithmetic number, because the mean of its divisors is an integer number (19547869104).

Almost surely, 2^253765138805 is an apocalyptic number.

It is an amenable number.

253765138805 is a deficient number, since it is larger than the sum of its proper divisors (59000766859).

253765138805 is a wasteful number, since it uses less digits than its factorization.

253765138805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76876.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 253765138805 in words is "two hundred fifty-three billion, seven hundred sixty-five million, one hundred thirty-eight thousand, eight hundred five".