1248509699085 has 96 divisors (see below), whose sum is σ = 2415598682112. Its totient is φ = 544958571520.

The previous prime is 1248509699053. The next prime is 1248509699147. The reversal of 1248509699085 is 5809969058421.

It is a happy number.

It is not a de Polignac number, because 1248509699085 - 2⁵ = 1248509699053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 527572 + ... + 1665938.

It is an arithmetic number, because the mean of its divisors is an integer number (25162486272).

Almost surely, 2^{1248509699085} is an apocalyptic number.

1248509699085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1248509699085 is a deficient number, since it is larger than the sum of its proper divisors (1167088983027).

1248509699085 is a wasteful number, since it uses less digits than its factorization.

1248509699085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138443 (or 1138426 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 66.

The spelling of 1248509699085 in words is "one trillion, two hundred forty-eight billion, five hundred nine million, six hundred ninety-nine thousand, eighty-five".