1401244003997 has 2 divisors, whose sum is σ = 1401244003998. Its totient is φ = 1401244003996.

The previous prime is 1401244003987. The next prime is 1401244004003. The reversal of 1401244003997 is 7993004421041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1051145764516 + 350098239481 = 1025254^2 + 591691^2 .

It is an emirp because it is prime and its reverse (7993004421041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401244003997 - 2²⁴ = 1401227226781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401244003927) 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 as a sum of consecutive naturals, namely, 700622001998 + 700622001999.

It is an arithmetic number, because the mean of its divisors is an integer number (700622001999).

Almost surely, 2^{1401244003997} is an apocalyptic number.

It is an amenable number.

1401244003997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401244003997 is an equidigital number, since it uses as much as digits as its factorization.

1401244003997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 1401244003997 in words is "one trillion, four hundred one billion, two hundred forty-four million, three thousand, nine hundred ninety-seven".