18206865047080 has 16 divisors (see below), whose sum is σ = 40965446356020. Its totient is φ = 7282746018816.

The previous prime is 18206865047051. The next prime is 18206865047101. The reversal of 18206865047080 is 8074056860281.

It can be written as a sum of positive squares in 2 ways, for example, as 14853300584004 + 3353564463076 = 3853998^2 + 1831274^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227585813049 + ... + 227585813128.

Almost surely, 2^{18206865047080} is an apocalyptic number.

18206865047080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18206865047080 is an abundant number, since it is smaller than the sum of its proper divisors (22758581308940).

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

18206865047080 is a wasteful number, since it uses less digits than its factorization.

18206865047080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455171626188 (or 455171626184 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 18206865047080 in words is "eighteen trillion, two hundred six billion, eight hundred sixty-five million, forty-seven thousand, eighty".