1401142444391 has 2 divisors, whose sum is σ = 1401142444392. Its totient is φ = 1401142444390.

The previous prime is 1401142444321. The next prime is 1401142444463. The reversal of 1401142444391 is 1934442411041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1401142444391 - 2¹⁰ = 1401142443367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401142444321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700571222195 + 700571222196.

It is an arithmetic number, because the mean of its divisors is an integer number (700571222196).

Almost surely, 2^{1401142444391} is an apocalyptic number.

1401142444391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401142444391 is an equidigital number, since it uses as much as digits as its factorization.

1401142444391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 1401142444391 in words is "one trillion, four hundred one billion, one hundred forty-two million, four hundred forty-four thousand, three hundred ninety-one".