215241540251351 has 4 divisors (see below), whose sum is σ = 215241986049432. Its totient is φ = 215241094453272.

The previous prime is 215241540251317. The next prime is 215241540251363. The reversal of 215241540251351 is 153152045142512.

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

It is a cyclic number.

It is not a de Polignac number, because 215241540251351 - 2¹⁰ = 215241540250327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215241540251299 and 215241540251308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215241540251051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222174020 + ... + 223140713.

It is an arithmetic number, because the mean of its divisors is an integer number (53810496512358).

Almost surely, 2^{215241540251351} is an apocalyptic number.

215241540251351 is a deficient number, since it is larger than the sum of its proper divisors (445798081).

215241540251351 is an equidigital number, since it uses as much as digits as its factorization.

215241540251351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445798080.

The product of its (nonzero) digits is 240000, while the sum is 41.

Adding to 215241540251351 its reverse (153152045142512), we get a palindrome (368393585393863).

The spelling of 215241540251351 in words is "two hundred fifteen trillion, two hundred forty-one billion, five hundred forty million, two hundred fifty-one thousand, three hundred fifty-one".