252643343346251 has 32 divisors (see below), whose sum is σ = 299540989440000. Its totient is φ = 210059030782080.

The previous prime is 252643343346193. The next prime is 252643343346293. The reversal of 252643343346251 is 152643343346252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 252643343346251 - 2¹⁸ = 252643343084107 is a prime.

It is a super-3 number, since 3×252643343346251³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252643343346193 and 252643343346202.

It is not an unprimeable number, because it can be changed into a prime (252643343345251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 915239750 + ... + 915515748.

It is an arithmetic number, because the mean of its divisors is an integer number (9360655920000).

Almost surely, 2^{252643343346251} is an apocalyptic number.

252643343346251 is a deficient number, since it is larger than the sum of its proper divisors (46897646093749).

252643343346251 is a wasteful number, since it uses less digits than its factorization.

252643343346251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334859.

The product of its digits is 37324800, while the sum is 53.

Subtracting from 252643343346251 its reverse (152643343346252), we obtain a palindrome (99999999999999).

The spelling of 252643343346251 in words is "two hundred fifty-two trillion, six hundred forty-three billion, three hundred forty-three million, three hundred forty-six thousand, two hundred fifty-one".