18099653964 has 96 divisors (see below), whose sum is σ = 49233999360. Its totient is φ = 5068127232.

The previous prime is 18099653941. The next prime is 18099653989. The reversal of 18099653964 is 46935699081.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18099653898 and 18099653907.

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 31 ways as a sum of consecutive naturals, for example, 1664754 + ... + 1675590.

It is an arithmetic number, because the mean of its divisors is an integer number (512854160).

Almost surely, 2^18099653964 is an apocalyptic number.

18099653964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18099653964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24616999680).

18099653964 is an abundant number, since it is smaller than the sum of its proper divisors (31134345396).

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

18099653964 is a wasteful number, since it uses less digits than its factorization.

18099653964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247 (or 11245 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 60.

The spelling of 18099653964 in words is "eighteen billion, ninety-nine million, six hundred fifty-three thousand, nine hundred sixty-four".