253871400140 has 48 divisors (see below), whose sum is σ = 535603398624. Its totient is φ = 101078208000.

The previous prime is 253871400137. The next prime is 253871400169. The reversal of 253871400140 is 41004178352.

It is a self number, because there is not a number n which added to its sum of digits gives 253871400140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5298290 + ... + 5345990.

It is an arithmetic number, because the mean of its divisors is an integer number (11158404138).

Almost surely, 2^253871400140 is an apocalyptic number.

253871400140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253871400140 is an abundant number, since it is smaller than the sum of its proper divisors (281731998484).

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

253871400140 is a wasteful number, since it uses less digits than its factorization.

253871400140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48938 (or 48936 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

Adding to 253871400140 its reverse (41004178352), we get a palindrome (294875578492).

The spelling of 253871400140 in words is "two hundred fifty-three billion, eight hundred seventy-one million, four hundred thousand, one hundred forty".