1551551234243 has 8 divisors (see below), whose sum is σ = 1552943648256. Its totient is φ = 1550159037000.

The previous prime is 1551551234227. The next prime is 1551551234257. The reversal of 1551551234243 is 3424321551551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1551551234243 - 2⁴ = 1551551234227 is a prime.

It is a super-2 number, since 2×1551551234243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1551551234243.

It is not an unprimeable number, because it can be changed into a prime (1551551234293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16511330 + ... + 16605032.

It is an arithmetic number, because the mean of its divisors is an integer number (194117956032).

Almost surely, 2^{1551551234243} is an apocalyptic number.

1551551234243 is a deficient number, since it is larger than the sum of its proper divisors (1392414013).

1551551234243 is a wasteful number, since it uses less digits than its factorization.

1551551234243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108385.

The product of its digits is 360000, while the sum is 41.

Adding to 1551551234243 its reverse (3424321551551), we get a palindrome (4975872785794).

The spelling of 1551551234243 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-four thousand, two hundred forty-three".