412500185681 has 2 divisors, whose sum is σ = 412500185682. Its totient is φ = 412500185680.

The previous prime is 412500185641. The next prime is 412500185687. The reversal of 412500185681 is 186581005214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316086830656 + 96413355025 = 562216^2 + 310505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-412500185681 is a prime.

It is a super-2 number, since 2×412500185681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (412500185687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206250092840 + 206250092841.

It is an arithmetic number, because the mean of its divisors is an integer number (206250092841).

Almost surely, 2^412500185681 is an apocalyptic number.

It is an amenable number.

412500185681 is a deficient number, since it is larger than the sum of its proper divisors (1).

412500185681 is an equidigital number, since it uses as much as digits as its factorization.

412500185681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 41.

The spelling of 412500185681 in words is "four hundred twelve billion, five hundred million, one hundred eighty-five thousand, six hundred eighty-one".