1401309599887 has 2 divisors, whose sum is σ = 1401309599888. Its totient is φ = 1401309599886.

The previous prime is 1401309599857. The next prime is 1401309599897. The reversal of 1401309599887 is 7889959031041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401309599887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401309599857) 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, 700654799943 + 700654799944.

It is an arithmetic number, because the mean of its divisors is an integer number (700654799944).

Almost surely, 2^{1401309599887} is an apocalyptic number.

1401309599887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401309599887 is an equidigital number, since it uses as much as digits as its factorization.

1401309599887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 64.

The spelling of 1401309599887 in words is "one trillion, four hundred one billion, three hundred nine million, five hundred ninety-nine thousand, eight hundred eighty-seven".