1051671233549 has 4 divisors (see below), whose sum is σ = 1051884256764. Its totient is φ = 1051458210336.

The previous prime is 1051671233513. The next prime is 1051671233551. The reversal of 1051671233549 is 9453321761501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 594276017449 + 457395216100 = 770893^2 + 676310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1051671233549 is a prime.

It is a super-2 number, since 2×1051671233549² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051671233749) 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, 106504202 + ... + 106514075.

It is an arithmetic number, because the mean of its divisors is an integer number (262971064191).

Almost surely, 2^{1051671233549} is an apocalyptic number.

It is an amenable number.

1051671233549 is a deficient number, since it is larger than the sum of its proper divisors (213023215).

1051671233549 is an equidigital number, since it uses as much as digits as its factorization.

1051671233549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213023214.

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 1051671233549 in words is "one trillion, fifty-one billion, six hundred seventy-one million, two hundred thirty-three thousand, five hundred forty-nine".