1440004653991 has 2 divisors, whose sum is σ = 1440004653992. Its totient is φ = 1440004653990.

The previous prime is 1440004653973. The next prime is 1440004654001. The reversal of 1440004653991 is 1993564000441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1440004653991 - 2⁵ = 1440004653959 is a prime.

It is a super-2 number, since 2×1440004653991² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440004653391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720002326995 + 720002326996.

It is an arithmetic number, because the mean of its divisors is an integer number (720002326996).

Almost surely, 2^{1440004653991} is an apocalyptic number.

1440004653991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440004653991 is an equidigital number, since it uses as much as digits as its factorization.

1440004653991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 1440004653991 in words is "one trillion, four hundred forty billion, four million, six hundred fifty-three thousand, nine hundred ninety-one".