1401575821273 has 2 divisors, whose sum is σ = 1401575821274. Its totient is φ = 1401575821272.

The previous prime is 1401575821271. The next prime is 1401575821279. The reversal of 1401575821273 is 3721285751041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869942347849 + 531633473424 = 932707^2 + 729132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401575821273 - 2¹ = 1401575821271 is a prime.

Together with 1401575821271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1401575821271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700787910636 + 700787910637.

It is an arithmetic number, because the mean of its divisors is an integer number (700787910637).

Almost surely, 2^{1401575821273} is an apocalyptic number.

It is an amenable number.

1401575821273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401575821273 is an equidigital number, since it uses as much as digits as its factorization.

1401575821273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 1401575821273 in words is "one trillion, four hundred one billion, five hundred seventy-five million, eight hundred twenty-one thousand, two hundred seventy-three".