1491248502459 has 20 divisors (see below), whose sum is σ = 2236834901576. Its totient is φ = 994165655184.

The previous prime is 1491248502391. The next prime is 1491248502487. The reversal of 1491248502459 is 9542058421941.

1491248502459 is a `hidden beast` number, since 1 + 4 + 9 + 124 + 8 + 502 + 4 + 5 + 9 = 666.

It is not a de Polignac number, because 1491248502459 - 2²¹ = 1491246405307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1491248502259) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37861954 + ... + 37901319.

Almost surely, 2^{1491248502459} is an apocalyptic number.

1491248502459 is a deficient number, since it is larger than the sum of its proper divisors (745586399117).

1491248502459 is an frugal number, since it uses more digits than its factorization.

1491248502459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75763300 (or 75763276 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 1491248502459 in words is "one trillion, four hundred ninety-one billion, two hundred forty-eight million, five hundred two thousand, four hundred fifty-nine".