40515180749 has 2 divisors, whose sum is σ = 40515180750. Its totient is φ = 40515180748.

The previous prime is 40515180709. The next prime is 40515180757. The reversal of 40515180749 is 94708151504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37368756100 + 3146424649 = 193310^2 + 56093^2 .

It is a cyclic number.

It is not a de Polignac number, because 40515180749 - 2³² = 36220213453 is a prime.

It is a super-2 number, since 2×40515180749² (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 (40515180709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20257590374 + 20257590375.

It is an arithmetic number, because the mean of its divisors is an integer number (20257590375).

Almost surely, 2^40515180749 is an apocalyptic number.

It is an amenable number.

40515180749 is a deficient number, since it is larger than the sum of its proper divisors (1).

40515180749 is an equidigital number, since it uses as much as digits as its factorization.

40515180749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 40515180749 in words is "forty billion, five hundred fifteen million, one hundred eighty thousand, seven hundred forty-nine".