253231510121400 has 96 divisors (see below), whose sum is σ = 785109911200560. Its totient is φ = 67520468951040.

The previous prime is 253231510121389. The next prime is 253231510121441. The reversal of 253231510121400 is 4121015132352.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 19680907 + ... + 29896506.

Almost surely, 2^{253231510121400} is an apocalyptic number.

253231510121400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253231510121400 is an abundant number, since it is smaller than the sum of its proper divisors (531878401079160).

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

253231510121400 is a wasteful number, since it uses less digits than its factorization.

253231510121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49585945 (or 49585936 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 253231510121400 its reverse (4121015132352), we get a palindrome (257352525253752).

The spelling of 253231510121400 in words is "two hundred fifty-three trillion, two hundred thirty-one billion, five hundred ten million, one hundred twenty-one thousand, four hundred".