40155263189 has 2 divisors, whose sum is σ = 40155263190. Its totient is φ = 40155263188.

The previous prime is 40155263149. The next prime is 40155263243. The reversal of 40155263189 is 98136255104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40042011025 + 113252164 = 200105^2 + 10642^2 .

It is a cyclic number.

It is not a de Polignac number, because 40155263189 - 2¹² = 40155259093 is a prime.

It is a super-2 number, since 2×40155263189² (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 (40155263149) 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, 20077631594 + 20077631595.

It is an arithmetic number, because the mean of its divisors is an integer number (20077631595).

Almost surely, 2^40155263189 is an apocalyptic number.

It is an amenable number.

40155263189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40155263189 is an equidigital number, since it uses as much as digits as its factorization.

40155263189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 40155263189 in words is "forty billion, one hundred fifty-five million, two hundred sixty-three thousand, one hundred eighty-nine".