40006882061 has 2 divisors, whose sum is σ = 40006882062. Its totient is φ = 40006882060.

The previous prime is 40006882039. The next prime is 40006882099. The reversal of 40006882061 is 16028860004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20264946025 + 19741936036 = 142355^2 + 140506^2 .

It is a cyclic number.

It is not a de Polignac number, because 40006882061 - 2¹⁰ = 40006881037 is a prime.

It is a super-2 number, since 2×40006882061² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40006882001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003441030 + 20003441031.

It is an arithmetic number, because the mean of its divisors is an integer number (20003441031).

Almost surely, 2^40006882061 is an apocalyptic number.

It is an amenable number.

40006882061 is a deficient number, since it is larger than the sum of its proper divisors (1).

40006882061 is an equidigital number, since it uses as much as digits as its factorization.

40006882061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 40006882061 in words is "forty billion, six million, eight hundred eighty-two thousand, sixty-one".