40067180381 has 2 divisors, whose sum is σ = 40067180382. Its totient is φ = 40067180380.

The previous prime is 40067180327. The next prime is 40067180401. The reversal of 40067180381 is 18308176004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31589374756 + 8477805625 = 177734^2 + 92075^2 .

It is a cyclic number.

It is not a de Polignac number, because 40067180381 - 2⁶ = 40067180317 is a prime.

It is a super-2 number, since 2×40067180381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40067180311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20033590190 + 20033590191.

It is an arithmetic number, because the mean of its divisors is an integer number (20033590191).

Almost surely, 2^40067180381 is an apocalyptic number.

It is an amenable number.

40067180381 is a deficient number, since it is larger than the sum of its proper divisors (1).

40067180381 is an equidigital number, since it uses as much as digits as its factorization.

40067180381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 40067180381 in words is "forty billion, sixty-seven million, one hundred eighty thousand, three hundred eighty-one".