40206277268981 has 2 divisors, whose sum is σ = 40206277268982. Its totient is φ = 40206277268980.

The previous prime is 40206277268917. The next prime is 40206277269013. The reversal of 40206277268981 is 18986277260204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39781087200625 + 425190068356 = 6307225^2 + 652066^2 .

It is a cyclic number.

It is not a de Polignac number, because 40206277268981 - 2⁶ = 40206277268917 is a prime.

It is a super-2 number, since 2×40206277268981² (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 (40206277268081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20103138634490 + 20103138634491.

It is an arithmetic number, because the mean of its divisors is an integer number (20103138634491).

Almost surely, 2^{40206277268981} is an apocalyptic number.

It is an amenable number.

40206277268981 is a deficient number, since it is larger than the sum of its proper divisors (1).

40206277268981 is an equidigital number, since it uses as much as digits as its factorization.

40206277268981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 40206277268981 in words is "forty trillion, two hundred six billion, two hundred seventy-seven million, two hundred sixty-eight thousand, nine hundred eighty-one".