1248135923099 has 16 divisors (see below), whose sum is σ = 1386556166688. Its totient is φ = 1116048575232.

The previous prime is 1248135923093. The next prime is 1248135923119. The reversal of 1248135923099 is 9903295318421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1248135923099 - 2²⁰ = 1248134874523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248135923093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5606402 + ... + 5824775.

It is an arithmetic number, because the mean of its divisors is an integer number (86659760418).

Almost surely, 2^{1248135923099} is an apocalyptic number.

1248135923099 is a deficient number, since it is larger than the sum of its proper divisors (138420243589).

1248135923099 is a wasteful number, since it uses less digits than its factorization.

1248135923099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11431454.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 1248135923099 in words is "one trillion, two hundred forty-eight billion, one hundred thirty-five million, nine hundred twenty-three thousand, ninety-nine".