18260903222856 has 576 divisors, whose sum is σ = 61238136960000. Its totient is φ = 4887526355712.

The previous prime is 18260903222843. The next prime is 18260903222869. The reversal of 18260903222856 is 65822230906281.

18260903222856 is a `hidden beast` number, since 1 + 8 + 2 + 609 + 0 + 3 + 2 + 2 + 28 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (18260903222843) and next prime (18260903222869).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5930788725 + ... + 5930791803.

It is an arithmetic number, because the mean of its divisors is an integer number (106316210000).

Almost surely, 2^{18260903222856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18260903222856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30619068480000).

18260903222856 is an abundant number, since it is smaller than the sum of its proper divisors (42977233737144).

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

18260903222856 is a wasteful number, since it uses less digits than its factorization.

18260903222856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 18260903222856 in words is "eighteen trillion, two hundred sixty billion, nine hundred three million, two hundred twenty-two thousand, eight hundred fifty-six".