7749900099018 has 96 divisors (see below), whose sum is σ = 20938169640960. Its totient is φ = 2012636587680.

The previous prime is 7749900099013. The next prime is 7749900099031. The reversal of 7749900099018 is 8109900099477.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7749900099013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8210803 + ... + 9105881.

It is an arithmetic number, because the mean of its divisors is an integer number (218105933760).

Almost surely, 2^{7749900099018} is an apocalyptic number.

7749900099018 is an abundant number, since it is smaller than the sum of its proper divisors (13188269541942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7749900099018 is a wasteful number, since it uses less digits than its factorization.

7749900099018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901352 (or 901349 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 63.

The spelling of 7749900099018 in words is "seven trillion, seven hundred forty-nine billion, nine hundred million, ninety-nine thousand, eighteen".