285108621643 has 2 divisors, whose sum is σ = 285108621644. Its totient is φ = 285108621642.

The previous prime is 285108621601. The next prime is 285108621671. The reversal of 285108621643 is 346126801582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285108621643 - 2¹⁷ = 285108490571 is a prime.

It is a super-2 number, since 2×285108621643² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 285108621593 and 285108621602.

It is not a weakly prime, because it can be changed into another prime (285108624643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142554310821 + 142554310822.

It is an arithmetic number, because the mean of its divisors is an integer number (142554310822).

Almost surely, 2^285108621643 is an apocalyptic number.

285108621643 is a deficient number, since it is larger than the sum of its proper divisors (1).

285108621643 is an equidigital number, since it uses as much as digits as its factorization.

285108621643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 285108621643 in words is "two hundred eighty-five billion, one hundred eight million, six hundred twenty-one thousand, six hundred forty-three".