1481459100721 has 2 divisors, whose sum is σ = 1481459100722. Its totient is φ = 1481459100720.

The previous prime is 1481459100689. The next prime is 1481459100763. The reversal of 1481459100721 is 1270019541841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1224207260721 + 257251840000 = 1106439^2 + 507200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481459100721 - 2⁵ = 1481459100689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1481459100521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 740729550360 + 740729550361.

It is an arithmetic number, because the mean of its divisors is an integer number (740729550361).

Almost surely, 2^{1481459100721} is an apocalyptic number.

It is an amenable number.

1481459100721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1481459100721 is an equidigital number, since it uses as much as digits as its factorization.

1481459100721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 1481459100721 in words is "one trillion, four hundred eighty-one billion, four hundred fifty-nine million, one hundred thousand, seven hundred twenty-one".