42111600502981 has 2 divisors, whose sum is σ = 42111600502982. Its totient is φ = 42111600502980.

The previous prime is 42111600502927. The next prime is 42111600503053. The reversal of 42111600502981 is 18920500611124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26692360596225 + 15419239906756 = 5166465^2 + 3926734^2 .

It is a cyclic number.

It is not a de Polignac number, because 42111600502981 - 2¹⁵ = 42111600470213 is a prime.

It is a super-2 number, since 2×42111600502981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42111603502981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055800251490 + 21055800251491.

It is an arithmetic number, because the mean of its divisors is an integer number (21055800251491).

Almost surely, 2^{42111600502981} is an apocalyptic number.

It is an amenable number.

42111600502981 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111600502981 is an equidigital number, since it uses as much as digits as its factorization.

42111600502981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 40.

The spelling of 42111600502981 in words is "forty-two trillion, one hundred eleven billion, six hundred million, five hundred two thousand, nine hundred eighty-one".