1351643223057 has 16 divisors (see below), whose sum is σ = 1899206295360. Its totient is φ = 852695975232.

The previous prime is 1351643223043. The next prime is 1351643223067. The reversal of 1351643223057 is 7503223461531.

It is a happy number.

It is not a de Polignac number, because 1351643223057 - 2³¹ = 1349495739409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351643223017) 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 15 ways as a sum of consecutive naturals, for example, 13469418 + ... + 13569395.

It is an arithmetic number, because the mean of its divisors is an integer number (118700393460).

Almost surely, 2^{1351643223057} is an apocalyptic number.

It is an amenable number.

1351643223057 is a deficient number, since it is larger than the sum of its proper divisors (547563072303).

1351643223057 is a wasteful number, since it uses less digits than its factorization.

1351643223057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27039712.

The product of its (nonzero) digits is 453600, while the sum is 42.

Adding to 1351643223057 its reverse (7503223461531), we get a palindrome (8854866684588).

The spelling of 1351643223057 in words is "one trillion, three hundred fifty-one billion, six hundred forty-three million, two hundred twenty-three thousand, fifty-seven".