40515764767 has 2 divisors, whose sum is σ = 40515764768. Its totient is φ = 40515764766.

The previous prime is 40515764761. The next prime is 40515764819. The reversal of 40515764767 is 76746751504.

It is a happy number.

It is an a-pointer prime, because the next prime (40515764819) can be obtained adding 40515764767 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40515764767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40515764761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20257882383 + 20257882384.

It is an arithmetic number, because the mean of its divisors is an integer number (20257882384).

Almost surely, 2^40515764767 is an apocalyptic number.

40515764767 is a deficient number, since it is larger than the sum of its proper divisors (1).

40515764767 is an equidigital number, since it uses as much as digits as its factorization.

40515764767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4939200, while the sum is 52.

The spelling of 40515764767 in words is "forty billion, five hundred fifteen million, seven hundred sixty-four thousand, seven hundred sixty-seven".