181130250778128 has 60 divisors (see below), whose sum is σ = 506920499660848. Its totient is φ = 60375872767680.

The previous prime is 181130250778111. The next prime is 181130250778157. The reversal of 181130250778128 is 821877052031181.

181130250778128 is a `hidden beast` number, since 1 + 8 + 1 + 1 + 3 + 0 + 2 + 507 + 7 + 8 + 128 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 839643 + ... + 19051653.

Almost surely, 2^{181130250778128} is an apocalyptic number.

181130250778128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

181130250778128 is an abundant number, since it is smaller than the sum of its proper divisors (325790248882720).

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

181130250778128 is a wasteful number, since it uses less digits than its factorization.

181130250778128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18281092 (or 18281083 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 54.

The spelling of 181130250778128 in words is "one hundred eighty-one trillion, one hundred thirty billion, two hundred fifty million, seven hundred seventy-eight thousand, one hundred twenty-eight".