253397129246 has 4 divisors (see below), whose sum is σ = 380095693872. Its totient is φ = 126698564622.

The previous prime is 253397129243. The next prime is 253397129273. The reversal of 253397129246 is 642921793352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×253397129246² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253397129243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63349282310 + ... + 63349282313.

It is an arithmetic number, because the mean of its divisors is an integer number (95023923468).

Almost surely, 2^253397129246 is an apocalyptic number.

253397129246 is a deficient number, since it is larger than the sum of its proper divisors (126698564626).

253397129246 is a wasteful number, since it uses less digits than its factorization.

253397129246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126698564625.

The product of its digits is 4898880, while the sum is 53.

The spelling of 253397129246 in words is "two hundred fifty-three billion, three hundred ninety-seven million, one hundred twenty-nine thousand, two hundred forty-six".