40981078087 has 2 divisors, whose sum is σ = 40981078088. Its totient is φ = 40981078086.

The previous prime is 40981078081. The next prime is 40981078097. The reversal of 40981078087 is 78087018904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40981078087 - 2³ = 40981078079 is a prime.

It is a super-2 number, since 2×40981078087² (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 (40981078081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20490539043 + 20490539044.

It is an arithmetic number, because the mean of its divisors is an integer number (20490539044).

Almost surely, 2^40981078087 is an apocalyptic number.

40981078087 is a deficient number, since it is larger than the sum of its proper divisors (1).

40981078087 is an equidigital number, since it uses as much as digits as its factorization.

40981078087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 52.

The spelling of 40981078087 in words is "forty billion, nine hundred eighty-one million, seventy-eight thousand, eighty-seven".